Note: Zigbee gateway is needed Long press Click keep 5s. "8s" is reset Specifications: Power supply: 3V CR 2032 Battery Powered (Included) Communication: Zigbee 3.0*(zigbee hub is needed) Control distance: 25m open area Dimensions: 50 X 50mm Operating temperature: -10 °C~45 °C Working Humidity: <90%RH 【Two-in-one device for wireless scene】Yo