{"product_id":"solis-s1-w4g-st-with-sim-usb-wi-fi-4g-cellular-data-logger-5-year-sim-pre-installed-auto-failover-soliscloud-solis-s6-inverters","title":"Solis S1-W4G-ST With SIM USB Wi-Fi 4G Cellular Data Logger 5-Year SIM Pre-Installed Auto Failover SolisCloud Solis S6 Inverters","description":"\u003c!-- SEO Product Name: Solis S1-W4G-ST With SIM USB Wi-Fi 4G Cellular Data Logger SOL-S1-W4G-ST-S6-USB-S 5-Year SIM Pre-Installed Auto Failover SolisCloud Solis S6 Inverters 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 (With SIM, USB)\u003c\/strong\u003e (SOL-S1-W4G-ST-S6-USB-S) is a \u003cstrong\u003eWi-Fi + 4G cellular data logging stick\u003c\/strong\u003e for \u003cstrong\u003eSolis S6 series inverters\u003c\/strong\u003e, supplied with a \u003cstrong\u003epre-installed Nano SIM card valid for 5 years\u003c\/strong\u003e. It connects to \u003cstrong\u003eSolisCloud\u003c\/strong\u003e primarily via \u003cstrong\u003e2.4 GHz Wi-Fi\u003c\/strong\u003e, automatically switching to \u003cstrong\u003e4G cellular as fallback\u003c\/strong\u003e if Wi-Fi becomes unavailable — with no manual action required. Because the SIM is pre-installed and pre-activated, \u003cstrong\u003e4G monitoring works straight from the box\u003c\/strong\u003e: plug the logger into the inverter, configure Wi-Fi if available, and the system is monitored over either connection immediately. 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 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;\"\u003e5-yr SIM\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;opacity:.85;margin-top:4px;\"\u003eIncluded\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;\"\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:#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 This logger uses a USB-type connector and is designed for \u003cstrong\u003eSolis S6 series inverters\u003c\/strong\u003e which have a USB-type COM port. 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:#e8f5e9;border-left:4px solid #2e7d32;border-radius:0 8px 8px 0;padding:14px 18px;margin:6px 0 16px;font-size:15px;color:#1b4332;\"\u003e\n\u003cstrong\u003e✅ 5-year SIM pre-installed — 4G ready straight from the box:\u003c\/strong\u003e The SIM card is \u003cstrong\u003ealready installed and activated\u003c\/strong\u003e. No SIM sourcing, no activation steps, no APN configuration required. The 5-year plan covers the operational lifetime of a typical residential installation. After 5 years, a replacement SIM (any standard Nano SIM on a UK 4G data plan) can be inserted into the same slot.\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;color:#005c54;border-bottom:3px solid #008377;padding-bottom:8px;margin:28px 0 14px;text-transform:uppercase;letter-spacing:.05em;\"\u003eWith SIM vs No SIM — Which Version Do You Need?\u003c\/div\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"background:#e6f4f3;border:2px solid #008377;border-radius:8px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#005c54;margin-bottom:8px;\"\u003e✅ This product — SOL-S1-W4G-ST-S6-USB-S (With SIM)\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#444;line-height:1.7;\"\u003ePre-installed \u003cstrong\u003eNano SIM with 5-year data plan\u003c\/strong\u003e included. Insert and go — 4G works straight from the box. No SIM sourcing, no activation. Best for: straightforward installations, rapid commissioning, or any site where organising a SIM separately adds friction.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f8f8f8;border:2px solid #ccc;border-radius:8px;padding:16px 18px;\"\u003e\n\u003cdiv style=\"font-size:15px;font-weight:700;color:#333;margin-bottom:8px;\"\u003eSOL-S1-W4G-ST-S6-USB (No SIM)\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;color:#444;line-height:1.7;\"\u003eEmpty Nano SIM slot — insert your own SIM. Best for: installers who have existing IoT SIM contracts, prefer a specific network, or want longer\/custom plan terms. Identical hardware, lower upfront cost.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003e5-Year SIM Pre-Installed — 4G Active Straight from the Box\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe included Nano SIM has a \u003cstrong\u003e5-year data plan\u003c\/strong\u003e pre-loaded. Unlike the No-SIM version, there is nothing to organise before commissioning: plug the logger into the S6 inverter, power on, and 4G connectivity is available immediately as either the primary path (where Wi-Fi is absent) or the automatic failover (where Wi-Fi is present but may fail). The 5-year term aligns with typical inverter warranty periods and means no mid-installation monitoring gaps from an expired SIM.\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:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003e5-year SIM included\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003ePre-activated\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eNano SIM format\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eReady to go\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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003eWi-Fi Primary, 4G Cellular Automatic Failover — Uninterrupted Monitoring\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe logger connects to SolisCloud primarily via \u003cstrong\u003e2.4 GHz Wi-Fi\u003c\/strong\u003e when a suitable network is available. If the Wi-Fi connection fails — broadband outage, router issue, ISP maintenance — the logger \u003cstrong\u003eautomatically switches to 4G cellular\u003c\/strong\u003e, continuing to upload data to SolisCloud at the standard 5-minute interval. When Wi-Fi is restored, it switches back silently. This dual-path architecture means monitoring history has no gaps from network interruptions, even in locations with unreliable broadband.\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:700;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:700;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:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eZero manual action\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eNo gaps\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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003e4G-Only Sites — No Broadband or Wi-Fi Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eOn sites with no broadband connection at all — remote rural properties, commercial rooftop systems on unoccupied buildings, agricultural installations, or any location where running broadband to the inverter location is impractical — this logger can operate \u003cstrong\u003eentirely on 4G cellular\u003c\/strong\u003e. The pre-installed SIM means there is no dependency on the property’s internet infrastructure whatsoever. Data usage is minimal at 5-minute polling intervals: a low-data IoT plan is more than sufficient.\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:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eNo broadband needed\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003e4G standalone\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eRemote sites\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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003eUSB Connector — Insert+Lock into Solis S6 COM Port\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eThe touch-safe \u003cstrong\u003eUSB Insert+Lock connector\u003c\/strong\u003e plugs directly into the USB-type COM port on Solis S6 series inverters. No adapters, tools or additional cabling required. Power is drawn from the inverter via the COM port.\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:700;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:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eS6 only\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;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:#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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003eOne-Key RS485 Address Assignment — Fast Multi-Inverter Commissioning\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eTrigger via the SolisCloud app over Bluetooth: the logger automatically scans the RS485 bus and assigns sequential addresses to all connected inverters. Up to \u003cstrong\u003e10 Solis inverters\u003c\/strong\u003e can be monitored through a single logger via RS485 daisy-chain. 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:700;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:700;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:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eRS485 daisy-chain\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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003eBluetooth — Local Wi-Fi Configuration, No AP Mode\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;color:#444;line-height:1.6;\"\u003eWi-Fi SSID and password are entered via \u003cstrong\u003eBluetooth in the SolisCloud app\u003c\/strong\u003e. No AP mode setup: the phone does not need to disconnect from its own Wi-Fi. Bluetooth also enables local firmware updates and device status checks.\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:700;letter-spacing:.02em;margin:2px 4px 2px 0;white-space:nowrap;\"\u003eBluetooth setup\u003c\/span\u003e\u003cspan style=\"display:inline-block;background:#008377;color:#fff;border-radius:20px;padding:3px 11px;font-size:13px;font-weight:700;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:700;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:#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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003eThree LEDs — NET, COM, PWR — Instant Status\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 4G). \u003cstrong\u003eCOM\u003c\/strong\u003e: RS485 inverter communication. \u003cstrong\u003ePWR\u003c\/strong\u003e: power\/hardware. Solid = ok; flashing = connecting; off = fault. On-site diagnosis at a glance 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:700;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:700;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:700;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:#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 width=\"15\" height=\"15\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#fff\" stroke-width=\"3\"\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:700;color:#005c54;margin-bottom:4px;\"\u003eIP65, −30°C to +65°C, 79 g\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. Compact at \u003cstrong\u003e128 × 50 × 34 mm\u003c\/strong\u003e, \u003cstrong\u003e79 g\u003c\/strong\u003e. Suitable for all outdoor and indoor inverter locations.\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:700;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:700;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:700;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:700;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\u003ctable style=\"width:100%;border-collapse:collapse;font-family:'Segoe UI',Helvetica,Arial,sans-serif;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eCommunication\u003c\/td\u003e\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 (not 5 GHz)\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 Card\u003c\/td\u003e\n\u003ctd style=\"background:#f0f9f8;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eNano SIM — pre-installed, 5-year plan included\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;\"\u003eConnection Failover\u003c\/td\u003e\n\u003ctd style=\"background:#fff;padding:9px 14px;color:#222;font-size:14px;border-bottom:1px solid #e0e0e0;\"\u003eAuto Wi-Fi → 4G if Wi-Fi unavailable; auto-restores on Wi-Fi return\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eData\u003c\/td\u003e\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\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eMulti-Inverter\u003c\/td\u003e\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 — via SolisCloud app over Bluetooth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eConfiguration\u003c\/td\u003e\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\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003ePower\u003c\/td\u003e\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\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003ePhysical\u003c\/td\u003e\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\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eEnvironment\u003c\/td\u003e\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\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eCompatibility\u003c\/td\u003e\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\u003ctd colspan=\"2\" style=\"background:#008377;color:#fff;font-weight:700;padding:9px 14px;font-size:13px;letter-spacing:.06em;text-transform:uppercase;\"\u003eWarranty and Certification\u003c\/td\u003e\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\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;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\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eWhat is the difference between this (With SIM) and the No-SIM USB version?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eThe hardware is \u003cstrong\u003eidentical\u003c\/strong\u003e — same connector, same Wi-Fi, same 4G, same specs and same failover behaviour. The only difference is the SIM card: this version has a \u003cstrong\u003epre-installed Nano SIM with a 5-year data plan\u003c\/strong\u003e already activated. The \u003cstrong\u003eNo-SIM version\u003c\/strong\u003e (SOL-S1-W4G-ST-S6-USB) ships with an empty SIM slot and requires you to source and insert your own Nano SIM. Choose the With SIM version for simpler commissioning and no SIM management. Choose the No-SIM version if you have an existing IoT SIM contract or want to choose your own network and plan terms.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eDoes 4G work on all UK networks?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eThe included SIM is a \u003cstrong\u003emulti-network SIM\u003c\/strong\u003e designed for IoT monitoring use. It roams across available UK 4G networks and selects the strongest signal. Coverage depends on local 4G infrastructure. In areas with weak or no 4G coverage, the logger will use Wi-Fi as the sole connection. If cellular connectivity is critical for a remote site, check 4G coverage at the installation postcode before ordering.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eWhat happens when the 5-year SIM plan expires?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eAfter 5 years, the pre-installed SIM will expire. At that point, you can insert any standard \u003cstrong\u003eNano SIM\u003c\/strong\u003e on a UK 4G-enabled data plan into the SIM slot. Data usage is very low (small packets at 5-minute intervals), so a basic pay-as-you-go or IoT SIM with a modest data allowance is sufficient. The logger will continue working on Wi-Fi during any gap between the old SIM expiring and a new one being inserted.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;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?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eThis logger is compatible with \u003cstrong\u003eSolis S6 series\u003c\/strong\u003e inverters, which have a USB-type COM port. Solis 4G, 5G and S5 series inverters use a 4-pin COM port and require the \u003cstrong\u003eS1-W4G-ST (4-Pin)\u003c\/strong\u003e version. Check the Solis Datalogger Compatibility Guide at solis-service.solisinverters.com for a full model list.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #cde3e1;border-radius:8px;margin-bottom:10px;overflow:hidden;\"\u003e\u003cdetails\u003e\u003csummary style=\"padding:14px 18px;font-size:15px;font-weight:700;color:#005c54;cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;background:#f5fbfa;\"\u003e\u003cspan\u003eIs broadband or Wi-Fi required at the site?\u003c\/span\u003e\u003csvg width=\"18\" height=\"18\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"#008377\" stroke-width=\"2.5\"\u003e\u003cpolyline points=\"6 9 12 15 18 9\"\u003e\u003c\/polyline\u003e\u003c\/svg\u003e\u003c\/summary\u003e\u003cdiv style=\"padding:14px 18px 16px;font-size:15px;color:#444;line-height:1.65;border-top:1px solid #cde3e1;background:#fff;\"\u003eNo. When Wi-Fi is unavailable, the logger operates \u003cstrong\u003eentirely on 4G cellular\u003c\/strong\u003e using the included SIM. This makes it suitable for remote rural properties, commercial rooftop installations on unoccupied buildings, agricultural sites, and any location without reliable broadband. If Wi-Fi is present, the logger uses it as primary and falls back to 4G only if needed.\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:16px;font-weight:700;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:700;color:#005c54;margin-bottom:4px;\"\u003eSolis S1-W4G-ST (No SIM, USB)\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eSame logger — empty SIM slot, bring your own Nano SIM\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:700;color:#005c54;margin-bottom:4px;\"\u003eSolis S2-WL-ST (USB)\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eWi-Fi + LAN (no cellular) 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:700;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 for Solis 4G\/5G\/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:700;color:#005c54;margin-bottom:4px;\"\u003eSolis S1-W4G-ST (4-Pin, With SIM)\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px;color:#666;\"\u003eSame logger in 4-pin format for Solis 4G\/5G\/S5 inverters\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Solis","offers":[{"title":"Default Title","offer_id":63957549121885,"sku":"SOL-S1-W4G-ST-S6-USB-S","price":165.0,"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-with-sim-usb-wi-fi-4g-cellular-data-logger-5-year-sim-pre-installed-auto-failover-soliscloud-solis-s6-inverters","provider":"AIZO Quality Heating","version":"1.0","type":"link"}