Sonoff ZigBee Bridge is the heart of smart home that enables you to remotely manage a variety of ZigBee devices and sensors for monitoring and control purposes and allows you to create smart scenes to make Wi-Fi and ZigBee smart devices communicate to access a smarter home and control them all using the eWeLink APP. It maximizes efficiency for up to 32 connected sub-devices which are ZigBee-based switches, plugs and security sensors. One-tap pairing for all sub-devices, faster than Wi-Fi pairing. Features Remotely control ZigBee and Wi-Fi devices on eWeLink APP. One-tap quick pairing all sub-devices to be connected. Long-distance ZigBee signal transmission covers almost your entire home. Compatible with a wide variety of SONOFF ZigBee smart plugs, switches, wireless switch and sensors for more smart scenes. Hands-free control connected devices by virtue of Alexa or Google Home. Support device sharing with your family to control together. Group devices and access to control them via the home page of APP instead of sub-devices. View your home on either of them via adding a camera on the Bridge or sub-device. Works with other smart devices certified by ZigBee Alliance.