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Eastron SDM72CT-M vs Carlo Gavazzi EM24

Install fit
Phase support Three-phase four-wire 3P4W / 3 x 230(400) V AC system. 1P2W, 3P3W, and 3P4W systems for the AV9 direct-connected model.
Installation Indoor 4-module 35 mm DIN-rail mounted CT-operated three-phase meter for switchboards. Indoor 4-DIN DIN-rail mounted direct-connected energy analyzer for low-voltage switchboards.
Measurement CT-operated three-phase 4-wire multifunction energy meter with RS485 Modbus RTU import/export energy measurement. Direct-connected single/three-phase active and reactive energy analyzer with Modbus RTU and electrical-variable monitoring.
Max current 9999 A 65 A
Meter fit
Accuracy class Active energy Class 1.0 / Class B; reactive energy Class 2. Active energy Class 1 / Class B MID; reactive energy Class 2.
Current sensing External current transformers; CT primary configurable 1-9999 A with 1 A or 5 A CT secondary input. Direct connection up to 65 A; no external CTs for EM24DINAV93XISX.
Monitoring
Protocol RS485 Modbus RTU / pulse output RS485 Modbus RTU
Local API Yes Yes
Cloud dependency No vendor cloud required; local RS485 Modbus RTU and pulse outputs are available through compatible hardware. No vendor cloud required for core metering; local RS485 Modbus RTU access through compatible hardware or software.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Eastron product range; distributor stock, CT package, and certification details vary by market. Carlo Gavazzi global product channels; country pages, certification, stock, and distributor availability vary by region.
Source check
Last verified Jun 27, 2026 Jun 27, 2026
Product page Official page Official page
Documentation Official docs Official docs
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