Model: Pro3EM-US
from $118.47
The Shelly Pro 3EM (120A) is a wired, 3-phase smart energy meter designed for comprehensive power monitoring. Featuring both WiFi and Bluetooth connectivity, this gray accessory accurately tracks 2-way energy consumption up to 120A, making it ideal for integrating into home automation systems to manage and optimize your electrical usage. It comes with a 1-year warranty and is returnable within 90 days.
Hubs centralize control across protocols. Matter + Thread is the emerging cross-brand standard. Available from $118.47.
Hubs centralize control across protocols. Matter + Thread is the emerging cross-brand standard. Key decision: ecosystem lock-in (Amazon/Google/Apple) vs open standard (Home Assistant). Check Zigbee, Z-Wave, and Thread support.
Hardware lasts 5-10 years. Software support is the real constraint — proprietary hubs lose cloud support after 3-7 years. Open-source platforms have indefinite software life.
The Shelly Pro 3EM (120A), WiFi and Bluetooth 3-Phase Smart Energy Meter, 2-Way Consumption, Home Automation is available at homedepot, starting at $118.47.
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