Specification Brand EwelinkColor WhiteAPP Connectivity Ewelink APPProtocol ZigbeProduct Dimensions 52mm x 42mm x 12mmCompatibility Work with Amazon Alexa Google Assistant andAlice Features 1 You can set smart scenes add execution timing delay and sunrise and sunset settings 2 You can change temperature units Celsius Fahrenheit 3 You can view history records 4 It must be used together with the eWelink gateway Package Includes 1x Temperature and Humidity Sensor