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Eastron SDM120-M vs Eastron SDM230-M

Install fit
Phase support Single-phase two-wire 1P2W / 1P+N AC systems. Single-phase two-wire 1P2W / 1P+N AC systems.
Installation Indoor one-module DIN-rail mounted direct-connected single-phase meter. Indoor DIN-rail mounted direct-connected meter; installer-installed in a switchboard or electrical cabinet.
Measurement Single-phase multifunction import/export energy and electrical-parameter meter. Single-phase multifunction direct-connected energy meter for import/export energy, power, voltage, current, power factor, frequency, and demand monitoring.
Max current 45 A 100 A
Meter fit
Accuracy class Active energy Class 0.5/1; Class C/B. Class 0.5 IEC 62053-22 / Class C EN 50470-3:2022.
Current sensing Direct-connected whole-current meter; no external CTs required. Direct-connected meter; no external CTs required.
Monitoring
Protocol RS485 Modbus RTU / DLT645 / pulse output RS485 Modbus / DLT645 / pulse output
Local API Yes Yes
Cloud dependency No vendor cloud required; local readings are available through RS485 Modbus RTU and pulse outputs. No vendor cloud is required; readings are available locally through RS485 Modbus/DLT645 and pulse outputs when connected to compatible equipment.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Eastron product range; certification, stock, and model suffix availability vary by market. Global Eastron product range through Eastron factory/contact route and regional distributors; exact certification, stock, and model suffix availability vary by market.
Source check
Last verified Jun 25, 2026 Jun 24, 2026
Product page Official page Official page
Documentation Official docs Official docs
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