The Shelly 3EM Wi-Fi three-phase energy meter lets you monitor the consumption of any electrical circuits and appliances at home and in the office via your smartphone app. It has 3 independent measuring channels, up to 120A each. Shelly 3EM shows the consumption history separately for all 3 phases. The device can be configured to measure three separate points of a single-phase electrical system and measure each of them individually. It can also calculate bidirectional consumption. Three 120A current transformers are included. Compatible with all other Shelly products, Android, iOS, Amazon Alexa, Google Assistant and home automation servers. It does not need a hub to work.