The Shelly H&T records the temperature and humidity values in your home, day by day, hour by hour. Based on the temperature readings, you can control a Shelly actuator to turn your electric heating on and off, for example. It can be used as a standalone device or in conjunction with a smart home hub or software. It supports MQTT, ioBroker, Home Assistant, openHAB, and Domoticz, as well as a REST API. CRA123A battery is not included.