Shelly 3EM

graphics. In addition, MQTT can be activated to register it at a corresponding MQTT Brocker. It is calibrated in the factory together with the supplied clamps to achieve an accuracy of over 99%. In addition, it has a switching contact which can be used to control a relay, for example. It is installed in the fuse box on the DIN rail. The measured values are displayed in real time. It is also possible to calculate the energy costs.
The Shelly 3EM can be controlled via the Shelly App, the optional actuatable Cloud but also via MQTT and REST API. It is possible to set energy consumption thresholds. When these thresholds are reached, the Shelly 3EM will switch off the power via the relay contact. It is also possible to control by time of day or by sunrise and sunset. In addition to measuring energy consumption, the energy fed into the grid can also be measured. The Shelly 3EM automatically recognises how much energy was drawn and how much was fed in and displays this clearly in a graphic. The measurement data is stored in the cloud for 365 days. The data is also written to a CSV file at 5 minute intervals, which can be exported by the Shelly 3EM. The Shelly 3EM has a programming and debug header that can be used to flash alternative firmware. Built in is an ESP8266 with 4 MB flash. It can be integrated into various smart home systems: Home Assistant, Hubitat, openHAB, Domoticz, REST API, MQTTT, ioBroker, nymea and HomeSeer.