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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 one-module 18 mm CT-operated meter for 35 mm DIN rail in a dry enclosure; IP51 and CAT II context; qualified-person installation.
Measurement Direct-connected single-phase active/reactive energy analyzer with imported/exported energy measurement and RS485 Modbus RTU. CT-operated RMS multifunction meter for voltage, current, power, power factor, frequency, demand, and bidirectional energy via pulse and RS485 Modbus RTU.
Max current 100 A 9999 A
Meter fit
Accuracy class Active energy Class 1 / Class B; reactive energy Class 2. Class 1.0 active energy; Class 2 reactive energy. Class B is MID-version only.
Current sensing Direct connection 5(100) A; no external CTs for EM112DINAV01XS1PFB. External CT input: selectable 1 A or 5 A secondary, 0.25-5(6) A meter input, configurable 1-9999 A primary. MID versions lock the CT ratio after first setup.
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 Jul 16, 2026 Aug 29, 2026
Product page Official page Official page
Documentation Official docs Official docs
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