ZigBee3.0 protocol: the Sonoff ZBMINI Zigbee smart switch must work with ZigBee hub (required). Compatible with SONOFF ZBBridge, Amazon Hub, Samsung SmartThings Hub and Philips Hue Bridge. ZigBee3.0 protocol with AES 128 encryption protects device data security Hands-free voice control: seamless compatibility with Alexa and Google Home, which allows you to turn household appliances on and off via your voice 2-way control: apart from the app control, the Zigbee mini light switch can also connect a pair of 2-way rocker light switches to turn the light on the ground floor on / off from the upper floor Works as a signal transmission station: are you often offline because there is a long distance between your device and the router? ZBMINI can be a ZigBee router to transfer the signal between devices Mini housing, huge performance: no matter what type of junction box you use, the switch can be installed in it to make your wall switch smarter