{"product_id":"solis-s1-w4g-st-usb-wi-fi-4g-cellular-data-logger-no-sim-s6-inverters","title":"Solis S1-W4G-ST USB Wi-Fi 4G Cellular Data Logger No SIM | S6 Inverters","description":"\u003c!-- SEO Product Name: Solis S1-W4G-ST USB Wi-Fi 4G Cellular Data Logger No SIM SOL-S1-W4G-ST-S6-USB Auto Failover SolisCloud S6 Inverters Nano SIM IP65 2-Year Warranty --\u003e\n\u003cdiv style=\"font-size: 16px; font-family: 'Segoe UI',Helvetica,Arial,sans-serif; color: #222; background: transparent; max-width: 900px; line-height: 1.5;\"\u003e\n\u003cp style=\"font-size: 16px; line-height: 1.75; color: #333; margin: 0 0 18px;\"\u003eThe \u003cstrong\u003eSolis S1-W4G-ST (USB, No SIM)\u003c\/strong\u003e (model SOL-S1-W4G-ST-S6-USB) is a \u003cstrong\u003eWi-Fi + 4G cellular data logging stick\u003c\/strong\u003e for \u003cstrong\u003eSolis S6 series inverters\u003c\/strong\u003e. It uses a USB-type connector and connects to \u003cstrong\u003eSolisCloud\u003c\/strong\u003e via \u003cstrong\u003e2.4 GHz Wi-Fi as primary\u003c\/strong\u003e and automatically switches to \u003cstrong\u003e4G cellular as fallback\u003c\/strong\u003e if Wi-Fi goes down — ensuring uninterrupted monitoring without any manual intervention. This \u003cstrong\u003eNo SIM\u003c\/strong\u003e version ships without a SIM card: you supply your own standard Nano SIM on any UK data-enabled plan. Data uploads every \u003cstrong\u003e5 minutes\u003c\/strong\u003e to the \u003cstrong\u003eSolisCloud app\u003c\/strong\u003e (iOS and Android). Up to \u003cstrong\u003e10 inverters\u003c\/strong\u003e can be chained via RS485. \u003cstrong\u003eBluetooth\u003c\/strong\u003e for local configuration and one-key RS485 address assignment. Three LEDs: NET, COM, PWR. \u003cstrong\u003eIP65\u003c\/strong\u003e. Dimensions: \u003cstrong\u003e128 × 50 × 34 mm\u003c\/strong\u003e, \u003cstrong\u003e79 g\u003c\/strong\u003e. \u003cstrong\u003e2-year warranty\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(120px,1fr)); gap: 10px; margin-bottom: 24px;\"\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eWi-Fi+4G\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eDual Path\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eAuto\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003e4G Failover\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eNo SIM\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eBring Your Own\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e10 inv.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003ePer Logger\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003eIP65\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eProtection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #005c54; color: #fff; border-radius: 8px; padding: 14px 16px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: 800; line-height: 1;\"\u003e2-Year\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; opacity: .85; margin-top: 4px;\"\u003eWarranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #005c54;\"\u003e\n\u003cstrong\u003eℹ USB connector — Solis S6 series only:\u003c\/strong\u003e The SOL-S1-W4G-ST-S6-USB uses a USB-type COM port connector. It is compatible with \u003cstrong\u003eSolis S6 series inverters\u003c\/strong\u003e. For earlier Solis models with a 4-pin COM port (4G, 5G, S5 series), the \u003cstrong\u003eS1-W4G-ST (4-Pin)\u003c\/strong\u003e version is required. Check the Solis Datalogger Compatibility Guide at solis-service.solisinverters.com.\u003c\/div\u003e\n\u003cdiv style=\"background: #fff8e1; border-left: 4px solid #f0a500; border-radius: 0 8px 8px 0; padding: 14px 18px; margin: 6px 0 16px; font-size: 15px; color: #5a4000;\"\u003e\n\u003cstrong\u003eℹ No SIM included — bring your own Nano SIM:\u003c\/strong\u003e This version ships \u003cstrong\u003ewithout a SIM card\u003c\/strong\u003e. Insert any \u003cstrong\u003eNano SIM\u003c\/strong\u003e card on a UK 4G data-enabled plan (pay-as-you-go or contract). Data usage is very low — only used when Wi-Fi is unavailable or fails. Any UK network SIM works. If you want a pre-installed SIM with a multi-year data plan, the \u003cstrong\u003eS1-W4G-ST (USB, With SIM)\u003c\/strong\u003e is available separately.\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eWhich Solis Data Logger? S1 vs S2-WL-ST vs S5 (USB versions)\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"background: #005c54; color: #fff; padding: 10px 14px; text-align: left; font-size: 14px;\"\u003eScenario\u003c\/th\u003e\n\u003cth style=\"background: #008377; color: #fff; padding: 10px 14px; text-align: center; font-size: 14px;\"\u003eS1-W4G-ST\u003cbr\u003e(this product)\u003c\/th\u003e\n\u003cth style=\"background: #555; color: #fff; padding: 10px 14px; text-align: center; font-size: 14px;\"\u003eS2-WL-ST USB\u003c\/th\u003e\n\u003cth style=\"background: #777; color: #fff; padding: 10px 14px; text-align: center; font-size: 14px;\"\u003eS5-WiFi-ST\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #f0f9f8; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eWi-Fi unavailable on site (remote \/ no broadband)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Uses 4G cellular\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e❌ Wi-Fi required\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e❌ Wi-Fi required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #fff; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eWi-Fi unreliable — need automatic failover\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Auto-switches to 4G\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e⚠ LAN alternative\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e❌ No fallback\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #f0f9f8; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eNeed wired Ethernet (LAN) monitoring\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e❌ No LAN port\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Built-in RJ45\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e❌ No LAN port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #fff; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eNeed Modbus TCP for Home Assistant\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e❌ Not supported\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Via LAN port\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e❌ Not supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #f0f9f8; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eRouter uses 5 GHz \/ band-steering issues\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e⚠ 2.4 GHz only\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e⚠ 2.4 GHz only\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Dual-band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #fff; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eUp to 10 inverters via RS485\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Yes\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #fff; border-bottom: 1px solid #e0e0e0;\"\u003e✅ Yes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; color: #333; background: #f0f9f8; border-bottom: 1px solid #e0e0e0; font-weight: 600;\"\u003eSolis S6 inverter (USB port)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✅ USB version\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✅ USB version\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 14px; font-size: 14px; text-align: center; background: #f0f9f8; border-bottom: 1px solid #e0e0e0;\"\u003e✅ USB version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eKey Features\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eWi-Fi + 4G Cellular with Automatic Failover — Uninterrupted Monitoring\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe S1-W4G-ST operates primarily on \u003cstrong\u003e2.4 GHz Wi-Fi\u003c\/strong\u003e. If the Wi-Fi connection fails — router outage, ISP issue, signal drop — the logger \u003cstrong\u003eautomatically switches to 4G cellular\u003c\/strong\u003e without any manual action. When Wi-Fi is restored, it switches back. This dual-path failover means monitoring data continues uploading to SolisCloud regardless of local network conditions. Critically useful for properties with unreliable broadband, commercial sites, remote installations or anywhere that long Wi-Fi outages occur.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eWi-Fi primary\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e4G auto-failover\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eZero manual action\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eNo SIM Included — Use Any UK Nano SIM on Any Network\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThis variant ships without a SIM, giving flexibility over network and plan choice. Insert a standard \u003cstrong\u003eNano SIM\u003c\/strong\u003e from any UK 4G network. Data usage is minimal — the cellular connection is only active when Wi-Fi is unavailable, uploading small data packets at 5-minute intervals. A basic pay-as-you-go SIM with a data add-on, or a low-cost IoT SIM plan, is sufficient for most installations. Multi-network SIM versions (pre-installed, 5-year or 10-year plans) are available separately if preferred.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNano SIM slot\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eAny UK network\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eLow data usage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eUSB Connector — Plug Directly into Solis S6 COM Port\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eUses the same \u003cstrong\u003eUSB-type COM port\u003c\/strong\u003e as Solis S6 series inverters. The connector is touch-safe and locks in place. No adapters or tools required. Power is drawn directly from the inverter.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eUSB Insert+Lock\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eS6 series only\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eTouch-safe\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eOne-Key RS485 Address Assignment — Efficient Multi-Inverter Setup\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eThe \u003cstrong\u003eone-key address assignment\u003c\/strong\u003e function, triggered via the SolisCloud app over Bluetooth, automatically scans the RS485 bus and assigns sequential addresses to all connected inverters. Up to \u003cstrong\u003e10 inverters\u003c\/strong\u003e can be monitored through one logger. Eliminates manual address entry on each inverter display during commissioning.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOne-key assignment\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eUp to 10 inverters\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBluetooth trigger\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eBluetooth — Local Wi-Fi Config, No AP Mode Required\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eConfigure the Wi-Fi network (SSID and password), check device status, and update firmware via \u003cstrong\u003eBluetooth connection in the SolisCloud app\u003c\/strong\u003e. No AP mode setup sequence needed — no phone disconnection from home Wi-Fi.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eBluetooth local config\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNo AP mode\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eOTA firmware\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #f8f8f8; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eThree LEDs — NET, COM, PWR\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003e\n\u003cstrong\u003eNET\u003c\/strong\u003e: server\/network connection (Wi-Fi or cellular). \u003cstrong\u003eCOM\u003c\/strong\u003e: RS485 inverter communication. \u003cstrong\u003ePWR\u003c\/strong\u003e: power status. Solid = ok; flashing = connecting; off = fault. Immediate on-site diagnosis without the app.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eNET\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eCOM\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003ePWR\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px; background: #e6f4f3; border-left: 4px solid #008377; border-radius: 0 6px 6px 0; margin-bottom: 8px;\"\u003e\n\u003cdiv style=\"flex-shrink: 0; width: 30px; height: 30px; background: #008377; border-radius: 50%; display: flex; align-items: center; justify-content: center;\"\u003e\u003csvg stroke-width=\"3\" stroke=\"#fff\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"15\" width=\"15\"\u003e\u003cpolyline points=\"20 6 9 17 4 12\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 1;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eIP65, −30°C to +65°C, 128 × 50 × 34 mm\u003c\/div\u003e\n\u003cdiv style=\"font-size: 15px; color: #444; line-height: 1.6;\"\u003eDust-tight and water-jet resistant. Operating range \u003cstrong\u003e−30°C to +65°C\u003c\/strong\u003e, 5 – 95% RH, storage to −40\/+70°C, max 4,000 m altitude. Compact at \u003cstrong\u003e128 × 50 × 34 mm\u003c\/strong\u003e, \u003cstrong\u003e79 g\u003c\/strong\u003e.\u003c\/div\u003e\n\u003cdiv style=\"margin-top: 8px;\"\u003e\n\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003eIP65\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e−30°C to +65°C\u003c\/span\u003e\u003cspan style=\"display: inline-block; background: #008377; color: #fff; border-radius: 20px; padding: 3px 11px; font-size: 13px; font-weight: bold; letter-spacing: .02em; margin: 2px 4px 2px 0; white-space: nowrap;\"\u003e79g\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-family: 'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCommunication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWi-Fi Standard\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e802.11b\/g\/n — 2.4 GHz only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCellular\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e4G LTE \/ GSM\/GPRS: 850\/900\/1800\/1900 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eSIM Type\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eNano SIM (not included — user-supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eBluetooth\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes — local configuration and debugging\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eInverter Communication\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eRS485 (Modbus RTU)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eFailover\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eAuto-switches from Wi-Fi to 4G if Wi-Fi unavailable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eData\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eUpload Interval\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePlatform\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSolisCloud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eApp\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSolisCloud (iOS and Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eMulti-Inverter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Inverters per Logger\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e10 (RS485 daisy-chain)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eOne-Key Address Assignment\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eConfiguration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWi-Fi Setup\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eBluetooth via SolisCloud app \/ AP mode (browser)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003ePower\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eDC 5V (±5%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003ePower Consumption\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e≤5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003ePhysical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eConnector\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eUSB — Insert+Lock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eDimensions (L×W×H)\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e128 × 50 × 34 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e79 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eIndicators\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e3 × LED: NET, COM, PWR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eButtons\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e1 × RESET (short = data push; long = factory reset)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eEnvironment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eProtection\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eIP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e−30°C to +65°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e5 – 95% RH (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e−40°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eStorage Humidity\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e\u0026lt;40%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eMax Altitude\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e4,000 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eCompatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCompatible Inverters\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSolis S6 series (USB-type COM port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eNot Compatible\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eSolis 4G, 5G, S5 series — use S1-W4G-ST (4-Pin) instead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #008377; color: #fff; font-weight: bold; padding: 9px 14px; font-size: 13px; letter-spacing: .06em; text-transform: uppercase;\" colspan=\"2\"\u003eWarranty and Certification\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003e2 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eCertifications\u003c\/td\u003e\n\u003ctd style=\"background: #fff; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eCE, FCC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; font-weight: 600; color: #333; font-size: 14px; width: 46%; border-bottom: 1px solid #e0e0e0;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"background: #f0f9f8; padding: 9px 14px; color: #222; font-size: 14px; border-bottom: 1px solid #e0e0e0;\"\u003eGinlong Technologies Co., Ltd (Solis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat SIM card do I need?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eYou need a standard \u003cstrong\u003eNano SIM\u003c\/strong\u003e on a UK 4G-enabled data plan. Any UK mobile network works (EE, Vodafone, O2, Three, giffgaff, etc.). Data usage is very low because the cellular connection is only used when Wi-Fi is unavailable — at 5-minute intervals, each data packet is a few kilobytes. A basic pay-as-you-go SIM with a small monthly data add-on (e.g. 100MB\/month) is more than sufficient. Dedicated IoT SIM plans are also suitable. If you prefer a pre-installed multi-network SIM with a 5 or 10-year plan, the S1-W4G-ST (USB, With SIM) version is available separately.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhat happens if both Wi-Fi and 4G fail at the same time?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eIf both connections are unavailable, data will not upload to SolisCloud. However, the inverter continues to operate and generate independently of the logger. SolisCloud will show a gap in the monitoring data for the offline period. Once either connection is restored, the logger resumes uploading. Note: the S1-W4G-ST does not have built-in local storage for retransmitting missed data — unlike the S2-WL-ST. If data continuity during outages is critical, consider the S2-WL-ST instead.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eWhich Solis inverters are compatible with the USB version?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe USB-connector S1-W4G-ST is compatible with \u003cstrong\u003eSolis S6 series\u003c\/strong\u003e inverters. Solis S6 models have a USB-type COM port. Earlier series (4G, 5G, S5) use a 4-pin COM port and require the S1-W4G-ST (4-Pin) version. Check the Solis Datalogger Compatibility Guide at solis-service.solisinverters.com.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eHow is the cellular failover triggered?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eThe logger monitors the Wi-Fi connection continuously. If it loses connectivity to SolisCloud via Wi-Fi, it \u003cstrong\u003eautomatically activates the 4G cellular connection\u003c\/strong\u003e without any user action or manual reconfiguration. When Wi-Fi connectivity is restored, the logger returns to Wi-Fi as the primary path. The failover and switchback are seamless and transparent to SolisCloud.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; margin-bottom: 10px; overflow: hidden;\"\u003e\n\u003cdetails\u003e\n\u003csummary style=\"padding: 14px 18px; font-size: 15px; font-weight: bold; color: #005c54; cursor: pointer; list-style: none; display: flex; align-items: center; justify-content: space-between; background: #f5fbfa;\"\u003e\u003cspan\u003eDoes the S1-W4G-ST support Modbus TCP like the S2-WL-ST?\u003c\/span\u003e\u003csvg stroke-width=\"2.5\" stroke=\"#008377\" fill=\"none\" viewbox=\"0 0 24 24\" height=\"18\" width=\"18\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 18px 16px; font-size: 15px; color: #444; line-height: 1.65; border-top: 1px solid #cde3e1; background: #fff;\"\u003eNo. The S1-W4G-ST does not have a wired LAN (Ethernet) port and does not support Modbus TCP. If you need Modbus TCP for Home Assistant or a local BMS integration, the \u003cstrong\u003eS2-WL-ST (USB)\u003c\/strong\u003e is the correct product for S6 inverters.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 16px; font-weight: bold; color: #005c54; border-bottom: 3px solid #008377; padding-bottom: 8px; margin: 28px 0 14px; text-transform: uppercase; letter-spacing: .05em;\"\u003eRelated Products\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(220px,1fr)); gap: 10px; margin-bottom: 10px;\"\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolis S2-WL-ST (USB)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eWi-Fi + LAN for S6 inverters — with Modbus TCP\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolis S2-WL-ST (4-Pin)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eWi-Fi + LAN for Solis 4G\/5G\/S5 inverters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolis S5 Wi-Fi Data Logger (4-Pin)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eDual-band 2.4\/5 GHz Wi-Fi — 4-pin for S5 series\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #cde3e1; border-radius: 8px; padding: 16px 18px; text-align: center; background: #f5fbfa;\"\u003e\n\u003cdiv style=\"font-size: 15px; font-weight: bold; color: #005c54; margin-bottom: 4px;\"\u003eSolis S1-W4G-ST (USB, With SIM)\u003c\/div\u003e\n\u003cdiv style=\"font-size: 13px; color: #666;\"\u003eSame logger with pre-installed multi-network SIM\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Solis","offers":[{"title":"Default Title","offer_id":63957517271389,"sku":"SOL-S1-W4G-ST-S6-USB","price":115.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/SolisS1WIFI4GCellularStick_SIM_USBconnection.jpg?v=1774268393","url":"https:\/\/qualityheating.co.uk\/products\/solis-s1-w4g-st-usb-wi-fi-4g-cellular-data-logger-no-sim-s6-inverters","provider":"AIZO Quality Heating","version":"1.0","type":"link"}