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IAMMETER WEM3046T vs Carlo Gavazzi EM340

Install fit
Phase support Three-phase; current IAMMETER material also documents split-phase and single-phase use when configured appropriately. Three phase
Installation 2P DIN-rail mounted Wi-Fi energy meter with external 5A-output CTs and external antenna DIN-rail mounted direct-connected energy analyzer
Measurement CT-based bidirectional Wi-Fi energy meter for three-phase monitoring with installer-selected 5A CTs Direct-connected three-phase bidirectional energy analyzer
Max current Unknown 65 A
Meter fit
Accuracy class Class 1 active energy (IEC62053-21); ±1.0% voltage, current, and active power Class 1 (kWh) according to EN62053-21 / Class B (kWh) according to EN50470-3
Current sensing 3 x installer-supplied 5A-output CTs, one CT input per phase; standard package does not include CTs Direct-connected current measurement up to 65 A; no external CTs
Monitoring
Protocol Wi-Fi / HTTP / MQTT / Modbus TCP / RS485 Modbus RTU / Local API RS485 / Modbus RTU
Local API Yes No
Cloud dependency Optional cloud; local monitoring is also supported. No native cloud dependency in the reviewed source set; integration is built around Modbus RTU and supervisory systems such as PLC, SCADA, and BMS.
Home Assistant Yes No
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global official store; IAMMETER's current purchase guide also notes local warehouse fulfillment in the USA, Germany, and Australia. Global / localized official product pages
Source check
Last verified May 23, 2026 May 19, 2026
Product page Official page Official page
Documentation Official docs Official docs
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