[A of functions] 1. Signal view: Monitor signal status in real time. 2. Voice control: It can be easily controlled using voice through for and Home. 3. Offline reminder: Our smart switches also have a device offline reminder function, which can help users understand 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 the smart repeater through his or her mobile phone. Specification: Type-C input: DC5V 1A Output power: 20dB Indoor distance: 20-50m Outdoor distance: more than the 300m (open area) Working temperature: -10~55 Working humidity: 10%~90%RH Wireless protocol: 2.4GHz 802.11b/g, Zigbee3.0 Size: 5.9x3.5x1.2cm Material: plastic colour: White Precautions: 1. This product needs to be used with a Zigbee gateway. 2. It is recommended to purchase multiple repeaters in different spaces. Package Contents: 1 x Wireless smart gateway 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.