By mitting stable ZigBee signals, the signal coverage range can be expanded to 50m, effectively solving the control problem of signal blockage between ZigBee smart devices due to long distances. (It is recommended to purchase multiple and install them in areas with weak signals to create a smooth and unobstructed whole house network). Having faster mission speed and more stable signals. The output power can reach up to 20dB. Compact and Mini: Mini size, and convenient, not taking up too much space. Notes:1. This product needs to be used with Zigbee gateway. 2. It is recommended to purchase multiple relays in different spaces. [ Multiple functions ] 1. Signal viewing: Real time monitoring of signal status. 2. Voice control: You can use for Home uses voice for easy control. 3. Offline reminder: Our smart switch also has an offline device reminder function, which can help users understand the device status in a timely manner, improve device management efficiency, and effectively prevent device failures. 4. Device sharing: Through the device sharing function, member can easily enjoy the convenience of smart relays through their own mobile phones. Type-C input: DC5V 1A Output power: 20dB Indoor distance: 20-50m Outdoor distance: 300m (open area) Working temperature: -10 -55 Working humidity: 10%-90% RH Wireless protocol: 2.4GHz 802.11b/g, Zigbee3.0 Colour:White Material:plastic Package Contents: 1 x Zigbee repeter 1 x USB adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.