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IAMMETER WEM3080TD-150 vs Carlo Gavazzi EM340

Install fit
Phase support 3-phase 3-wire Delta; IAMMETER's current quickstart also documents split-phase and single-phase support Three phase
Installation 2P DIN-rail mounted Wi-Fi energy meter with split-core CTs and external antenna DIN-rail mounted direct-connected energy analyzer
Measurement CT-based bidirectional Wi-Fi energy meter for Delta-system and other supported monitoring setups Direct-connected three-phase bidirectional energy analyzer
Max current 150 A 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 2 x 150A split-core CTs used for standard Delta monitoring, with phase B as the reference phase Direct-connected current measurement up to 65 A; no external CTs
Monitoring
Protocol Wi-Fi / HTTP / HTTPS / MQTT / Modbus TCP / Local API RS485 / Modbus RTU
Local API Yes No
Cloud dependency Optional cloud; IAMMETER-Cloud Pro is supported, but local API, MQTT, HTTP/HTTPS, Modbus TCP, and self-hosted workflows remain available. 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 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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