SONOFF 4CHR3 4-gang Wi-Fi Smart Switch Description: SONOFF 4CHR3 is a 4-gang Wi-Fi Smart Switches designed to give you the ability to integrate smart control into your existing home to enable a smart home. Each smart switch has 4 gangs that can be used to control lights and other home appliances at the same time in four areas of your home. Features: 【Independently Control 4 Devices】Turn on/off the 4 connected devices separately. Allow you to turn on or off 4 connected lights independently. 【Smart Voice Control】You can directly ask Amazon Echo/Echo Dot/Amazon Tap, Google Home to turn on/off your SONOFF devices. .