Note Before Order! 1.Tuya ZigBee 3.0 Extender need work with Tuya ZigBee Hub, please make sure you already have a Tuya ZigBee Hub, if not, please buy the Tuya ZigBee Hub in our store. 2.This ZigBee repeater can't work with other brands' ZigBee Hub, please make sure your ZigBee Hub is from Tuya. 3.This repeater only can transit Tuya ZigBee signal, it can't work alone without Tuya ZigBee Hub. 4.Please contact us online if you have any questions. Specifications: 1.It is a mini smart valve that Tuya develops.It consist of a highly intergrated WI-FI module, low power-consuming Zigbee module, and PCBA. It can be connected to the Tuya smart app for device adding, reset, third-party control, and Zigbee group control, meeting smart home requirements. 2.There sensors and detectors can not work without gateway.Gateway need to connect with WI-FI router, if you already have gateway, you can purchase our Zigbee sensors or detector only. 3.The Zigbee sensor and detector can not work standalone without gateway. 4.If your house too big then zigbee signal can't not cover every corner,then you can use this Zigbee signal repeater. 5.This repeater only can transit zigbee signal. 6.Transit signal strength depends on the actual house. Description: Working voltage: 1.8~3.8V Product size: 38.85 * 21.5 * 8.5mm Communication method: Zigbee Package Included: