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 of home, 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. SONOFF BASICZBR3 Wi-Fi Smart Switch, S31 zb Lite smart plug, SONOFF SNZB-01 Wireless Switch and sensors like SNZB-02 Temperature and Humidity Sensor, SNZB-03 Motion Sensor and SNZB-04 Wireless Door/Window Sensor can be connected with the Bridge to give you the possibility to create various scene linkages. As for more supported devices, the Bridge also can work with one-gang smart switch, temperature and humidity sensor, motion, wireless door/window sensor and water sensor that are certified by ZigBee Alliance. One-tap pairing all sub-devices, faster than Wi-Fi pairing. It supports to add a camera on the Bridge or sub-devices, convenient to view your home on any one of them. Can also command Alexa or Google Home to voice control your home.