{"product_id":"sunsynk-sdm120ct-m-single-phase-meter-sun-meter-e-1p-120a-ct","title":"Sunsynk SDM120CT-M Single-Phase Meter | SUN-METER-E-1P | 120A CT","description":"\u003c!-- SEO Product Name: Sunsynk SDM120CT-M Single-Phase Meter | SUN-METER-E-1P | 120A CT --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; color:#1a1a1a; line-height:1.6;\"\u003e\n\u003cp style=\"margin:0 0 16px 0;\"\u003eThe \u003cstrong\u003eSunsynk SDM120CT-M digital meter\u003c\/strong\u003e is a single-phase, \u003cstrong\u003eCT-operated Eastron energy meter\u003c\/strong\u003e specified by Sunsynk for installations where the run between the grid mains incomer and the inverter exceeds around 10 metres — a distance at which the inverter's built-in CT can start returning inaccurate power readings. Wiring in this external meter restores \u003cstrong\u003eprecise, real-time import\/export measurement\u003c\/strong\u003e regardless of cable run length, feeding accurate data back to the Sunsynk inverter for load and export management.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 16px 0;\"\u003eSupplied with a \u003cstrong\u003e120A\/40mA current transformer\u003c\/strong\u003e, the meter clips around the incoming supply conductor for non-invasive installation and communicates over \u003cstrong\u003eRS485 Modbus\u003c\/strong\u003e directly to the Sunsynk inverter. It is \u003cstrong\u003eMID certified (Class B and D)\u003c\/strong\u003e, giving bi-directional kW\/kWh measurement accurate enough for billing as well as system monitoring.\u003c\/p\u003e\n\n    \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:0 0 24px 0;\"\u003e\n        \n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f4faf9; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e120A\/40mA\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12px; color:#444; margin-top:4px; line-height:1.3;\"\u003eCT clamp ratio\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f4faf9; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003eClass 1\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12px; color:#444; margin-top:4px; line-height:1.3;\"\u003eActive energy accuracy\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f4faf9; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003eMID B+D\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12px; color:#444; margin-top:4px; line-height:1.3;\"\u003eCertified for billing\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f4faf9; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003eRS485\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12px; color:#444; margin-top:4px; line-height:1.3;\"\u003eModbus communication\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f4faf9; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e\u0026gt;10m\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12px; color:#444; margin-top:4px; line-height:1.3;\"\u003eRecommended run length\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 140px; min-width:140px; background:#f4faf9; border-top:3px solid #008377CF; border-radius:6px; padding:14px 10px; text-align:center;\"\u003e\n            \u003cdiv style=\"font-size:20px; font-weight:700; color:#008377CF;\"\u003e0.21kg\u003c\/div\u003e\n            \u003cdiv style=\"font-size:12px; color:#444; margin-top:4px; line-height:1.3;\"\u003eMeter weight\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"background:#fff8ea; border-left:4px solid #c8860d; border-radius:4px; padding:14px 16px; margin:0 0 18px 0;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#6b4a04; margin-bottom:4px;\"\u003eCT ratio must match — 120A\/40mA only\u003c\/div\u003e\n        \u003cdiv style=\"color:#6b4a04; font-size:14.5px; line-height:1.55;\"\u003eSunsynk specifically requires the \u003cstrong\u003e120A\/40mA CT clamp\u003c\/strong\u003e variant of the SDM120CT for use with its inverters. Fitting a meter with a different CT ratio (such as the 100A\/100mA variant used by some other inverter brands) will produce inaccurate readings, so always confirm the model and CT ratio before ordering a replacement or spare.\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background:#eaf6f4; border-left:4px solid #008377CF; border-radius:4px; padding:14px 16px; margin:0 0 18px 0;\"\u003e\n        \u003cdiv style=\"font-weight:700; color:#04463d; margin-bottom:4px;\"\u003eWhen to add this meter\u003c\/div\u003e\n        \u003cdiv style=\"color:#04463d; font-size:14.5px; line-height:1.55;\"\u003eThis meter is intended for installations where the \u003cstrong\u003ecable run between the grid mains incomer and the Sunsynk inverter exceeds roughly 10 metres\u003c\/strong\u003e. Over shorter runs, the inverter's own internal CT is normally sufficient; this external meter corrects the measurement error that longer cable runs can introduce.\u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:0 0 26px 0;\"\u003e\n        \n        \u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#ffffff; border:1px solid #e2e2e2; border-top:3px solid #008377CF; border-radius:6px; padding:16px;\"\u003e\n            \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:15px;\"\u003ePurpose-matched to Sunsynk inverters\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14px; color:#333; line-height:1.55;\"\u003eSpecified directly by Sunsynk to correct power-reading inaccuracy on installations with a \u003cstrong\u003elong grid-to-inverter cable run\u003c\/strong\u003e, ensuring the inverter's export and consumption data stays accurate.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#ffffff; border:1px solid #e2e2e2; border-top:3px solid #008377CF; border-radius:6px; padding:16px;\"\u003e\n            \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:15px;\"\u003e120A\/40mA CT clamp included\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14px; color:#333; line-height:1.55;\"\u003eSupplied with the \u003cstrong\u003ecorrect CT clamp for Sunsynk systems\u003c\/strong\u003e — a non-invasive clip-on sensor that measures current without breaking into the live conductor.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#ffffff; border:1px solid #e2e2e2; border-top:3px solid #008377CF; border-radius:6px; padding:16px;\"\u003e\n            \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:15px;\"\u003eMID certified for billing\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14px; color:#333; line-height:1.55;\"\u003eCertified to \u003cstrong\u003eMID Class B and D\u003c\/strong\u003e, so readings are accurate enough for formal energy billing as well as inverter monitoring and export control.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#ffffff; border:1px solid #e2e2e2; border-top:3px solid #008377CF; border-radius:6px; padding:16px;\"\u003e\n            \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:15px;\"\u003eBi-directional energy measurement\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14px; color:#333; line-height:1.55;\"\u003eMeasures \u003cstrong\u003eimport and export kW\/kWh\u003c\/strong\u003e independently, with configurable pulsed output for total, import, or export energy.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#ffffff; border:1px solid #e2e2e2; border-top:3px solid #008377CF; border-radius:6px; padding:16px;\"\u003e\n            \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:15px;\"\u003eRS485 Modbus communication\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14px; color:#333; line-height:1.55;\"\u003eCommunicates with the Sunsynk inverter over \u003cstrong\u003eRS485 Modbus\u003c\/strong\u003e, with an M-bus variant also available where that protocol is required.\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"flex:1 1 260px; min-width:240px; background:#ffffff; border:1px solid #e2e2e2; border-top:3px solid #008377CF; border-radius:6px; padding:16px;\"\u003e\n            \u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px; font-size:15px;\"\u003eCompact DIN rail meter\u003c\/div\u003e\n            \u003cdiv style=\"font-size:14px; color:#333; line-height:1.55;\"\u003eSimple to set up and operate, mounting on a standard \u003cstrong\u003eDIN rail\u003c\/strong\u003e within the consumer unit or inverter enclosure alongside other system components.\u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 26px 0; display:flex; flex-direction:column; gap:18px;\"\u003e\n    \u003cdiv style=\"margin:0 0 4px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:14.5px;\"\u003eElectrical\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #ececec; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eMeasurement type\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eSingle-phase, CT-operated\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eCT clamp ratio\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e120A \/ 40mA\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eRated voltage\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e230V AC, single phase\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eFrequency\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e50\/60Hz\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003ePower consumption\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e\u0026lt; 2W \/ 10VA\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 4px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:14.5px;\"\u003eAccuracy\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #ececec; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eActive energy\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eClass 1 (better than Class 1 overall)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eVoltage\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e0.5% of range maximum\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eCurrent\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e0.5% of nominal\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003ePower factor\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e1% of unity\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eFrequency\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e0.2% of mid-frequency\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 4px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:14.5px;\"\u003eCommunication \u0026amp; output\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #ececec; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eInterface\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eRS485 Modbus RTU (M-bus variant also available)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eBaud rate\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e1200 \/ 2400 \/ 4800 \/ 9600 bps (default 2400)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eModbus address range\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e1–247 (default 001)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003ePulse output 1\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eConfigurable — total \/ import \/ export \/ nett kWh\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003ePulse output 2\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eFixed, 1000 imp\/kWh\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 4px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:14.5px;\"\u003eCertification \u0026amp; standards\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #ececec; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eBilling certification\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eMID Certified, Class B and D\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eReference standard\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eIEC 62053-21 \/ EN 50470-1\/3\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eInstallation category\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eCAT II\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"margin:0 0 4px 0;\"\u003e\n        \u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:10px 14px; border-radius:6px 6px 0 0; font-size:14.5px;\"\u003ePhysical \u0026amp; environmental\u003c\/div\u003e\n        \u003cdiv style=\"border:1px solid #ececec; border-top:none; border-radius:0 0 6px 6px; overflow:hidden;\"\u003e\n            \n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eDimensions (W x H x D)\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e18mm x 118mm x 64mm\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eWeight\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e0.21kg\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eMounting\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e35mm DIN rail\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eDisplay\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eWhite backlit LCD\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eOperating temperature\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e-25°C to +55°C\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#ffffff; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eRelative humidity\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003e0–95%, non-condensing\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003cdiv style=\"display:flex; background:#f7fbfa; padding:9px 14px; border-bottom:1px solid #ececec;\"\u003e\n            \u003cdiv style=\"flex:0 0 46%; font-weight:600; color:#222; font-size:14px;\"\u003eProtection rating\u003c\/div\u003e\n            \u003cdiv style=\"flex:1; color:#333; font-size:14px;\"\u003eIP51 (indoor use)\u003c\/div\u003e\n        \u003c\/div\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e\n\n    \u003cdiv style=\"margin:8px 0 0 0;\"\u003e\n        \u003cdiv style=\"font-weight:700; font-size:17px; color:#111; margin:0 0 12px 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n        \n    \u003cdetails style=\"margin:0 0 8px 0; border:1px solid #e2e2e2; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none; font-size:14.5px;\"\u003eWhy would I need this meter with my Sunsynk inverter?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#ffffff;\"\u003eIt is needed where the \u003cstrong\u003ecable run between the grid mains incomer and the inverter exceeds roughly 10 metres\u003c\/strong\u003e. Over that distance, the inverter's built-in CT can return inaccurate power readings; this external meter restores accurate measurement.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin:0 0 8px 0; border:1px solid #e2e2e2; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none; font-size:14.5px;\"\u003eCan I use a different Eastron SDM120CT meter instead?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#ffffff;\"\u003eNo — Sunsynk specifically requires the \u003cstrong\u003e120A\/40mA CT clamp variant\u003c\/strong\u003e. Other Eastron SDM120CT meters use different CT ratios (such as 100A\/100mA) and are \u003cstrong\u003enot compatible\u003c\/strong\u003e with Sunsynk's expected calibration, which will result in inaccurate readings.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin:0 0 8px 0; border:1px solid #e2e2e2; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none; font-size:14.5px;\"\u003eIs this meter suitable for billing purposes, or just monitoring?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#ffffff;\"\u003eIt is \u003cstrong\u003eMID certified to Class B and D\u003c\/strong\u003e, so it is accurate enough for formal energy billing as well as day-to-day inverter monitoring and export control.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin:0 0 8px 0; border:1px solid #e2e2e2; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none; font-size:14.5px;\"\u003eHow does the meter communicate with the inverter?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#ffffff;\"\u003eOver \u003cstrong\u003eRS485 Modbus RTU\u003c\/strong\u003e, wired directly to the Sunsynk inverter's meter input; an M-bus communication variant is also available where that protocol is preferred.\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003cdetails style=\"margin:0 0 8px 0; border:1px solid #e2e2e2; border-radius:6px; overflow:hidden;\"\u003e\n        \u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none; font-size:14.5px;\"\u003eWho should install this meter?\u003c\/summary\u003e\n        \u003cdiv style=\"padding:14px 16px; font-size:14.5px; color:#333; line-height:1.6; background:#ffffff;\"\u003eInstallation involves working on the live incoming supply and should be carried out by a \u003cstrong\u003equalified electrician\u003c\/strong\u003e, in line with current UK wiring regulations (BS 7671).\u003c\/div\u003e\n    \u003c\/details\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sunsynk","offers":[{"title":"Default Title","offer_id":65993754411357,"sku":"SUN-METER-E-1P","price":175.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/eastron-sdm120-ct100m-ACT.webp?v=1770012461","url":"https:\/\/qualityheating.co.uk\/products\/sunsynk-sdm120ct-m-single-phase-meter-sun-meter-e-1p-120a-ct","provider":"AIZO Quality Heating","version":"1.0","type":"link"}