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Eastron SDM120CTM vs Aeotec Home Energy Meter

Install fit
Phase support Single-phase 1P+N / 1P2W AC system. Region-specific 1-phase, 2-phase / split-phase, and 3-phase ZW095 variants.
Installation Indoor 1-module DIN-rail CT-operated single-phase meter with external CT wiring. Electrical-panel clamp-meter installation; US versions use plug-in power and EU versions are wired in. Licensed-electrician installation recommended.
Measurement CT-operated single-phase multifunction energy meter with bidirectional energy and RS485 Modbus RTU. Clamp-based Z-Wave whole-home energy meter for consumption and solar / generator overproduction monitoring.
Max current 9999 A 200 A
Meter fit
Accuracy class Active energy Class 1.0 / Class B; reactive energy Class 2. Over 99% measurement accuracy when current is greater than 0.05 A
Current sensing External CTs; CT primary 1-9999 A with 1 A or 5 A CT secondary input. ZW095 clamp SKUs: US 2-clamp 200 A version; EU 1-clamp 60 A and 3-clamp 60 A variants.
Monitoring
Protocol RS485 Modbus RTU / pulse output Z-Wave Plus
Local API Yes Yes
Cloud dependency No vendor cloud required; readings are available locally through RS485 Modbus RTU and pulse outputs. No Aeotec cloud is required; the meter reports locally over Z-Wave to a compatible gateway. Remote app/cloud behavior depends on the chosen hub.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Eastron product range; distributor stock, CT package, certification, and variant availability vary by market. Global / region-specific Aeotec Z-Wave SKUs; availability depends on local Aeotec retailer or distributor stock.
Source check
Last verified Jun 28, 2026 Jun 21, 2026
Product page Official page Official page
Documentation Official docs Official docs
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