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Carlo Gavazzi EM112 vs Eastron SDM120CTM

Install fit
Phase support Single-phase 1-phase 2-wire / 230 V L-N system for the selected MID variant. Single-phase 1P+N / 1P2W AC system.
Installation Indoor 2-DIN DIN-rail mounted direct-connected single-phase energy analyzer. Indoor 1-module DIN-rail CT-operated single-phase meter with external CT wiring.
Measurement Direct-connected single-phase active/reactive energy analyzer with imported/exported energy measurement and RS485 Modbus RTU. CT-operated single-phase multifunction energy meter with bidirectional energy and RS485 Modbus RTU.
Max current 100 A 9999 A
Meter fit
Accuracy class Active energy Class 1 / Class B; reactive energy Class 2. Active energy Class 1.0 / Class B; reactive energy Class 2.
Current sensing Direct connection 5(100) A; no external CTs for EM112DINAV01XS1PFB. External CTs; CT primary 1-9999 A with 1 A or 5 A CT secondary input.
Monitoring
Protocol RS485 Modbus RTU / pulse output RS485 Modbus RTU / pulse output
Local API Yes Yes
Cloud dependency No vendor cloud required for core metering; readings are available locally through RS485 Modbus RTU and pulse output hardware paths. No vendor cloud required; readings are available locally through RS485 Modbus RTU and pulse outputs.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Carlo Gavazzi global product channels; country pages, MID/UKCA availability, stock, and distributor routes vary by region. Global Eastron product range; distributor stock, CT package, certification, and variant availability vary by market.
Source check
Last verified Jun 28, 2026 Jun 28, 2026
Product page Official page Official page
Documentation Official docs Official docs
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