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Eastron SDM230-Modbus vs Carlo Gavazzi EM112

Install fit
Phase support Single-phase 1P2W / 1P+N AC system. Single-phase 1-phase 2-wire / 230 V L-N system for the selected MID variant.
Installation Indoor 2-module 36 mm DIN-rail direct-connected single-phase energy meter. Indoor 2-DIN DIN-rail mounted direct-connected single-phase energy analyzer.
Measurement Direct-connected single-phase bidirectional Modbus energy meter. Direct-connected single-phase active/reactive energy analyzer with imported/exported energy measurement and RS485 Modbus RTU.
Max current 100 A 100 A
Meter fit
Accuracy class Active energy Class 1.0 / Class B; reactive energy Class 2. Active energy Class 1 / Class B; reactive energy Class 2.
Current sensing Direct connection up to 100 A; no external CTs for the SDM230-Modbus direct-fed variant. Direct connection 5(100) A; no external CTs for EM112DINAV01XS1PFB.
Monitoring
Protocol RS485 Modbus RTU / DLT645 / pulse output RS485 Modbus RTU / pulse output
Local API Yes Yes
Cloud dependency No vendor cloud required; readings are available locally through RS485 Modbus RTU and pulse outputs. No vendor cloud required for core metering; readings are available locally through RS485 Modbus RTU and pulse output hardware paths.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Eastron product range through Eastron and regional distributors; MID/ETL variant availability and local stock vary by market. Carlo Gavazzi global product channels; country pages, MID/UKCA availability, stock, and distributor routes vary by region.
Source check
Last verified Jul 3, 2026 Jun 28, 2026
Product page Official page Official page
Documentation Official docs Official docs
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