【Matter Switch】 This Smart Relay Switch is a Matter-certified WiFi smart switch which can work with other brands of Matter end devices and integrate into Matter-enabled platforms, such as Alexa, Google Home, etc. The smart switch support voice control via Alexa/Google Home, eWelink remote control, smart scheduled, you can to choose these function to according your needs to smart and comfort your life. 【Detach Relay Mode】The smart relay switch has “detach relay” mode, which means the states of external switches and relay are separated, so operating the external switch button won’t affect the relay state. 【More Compatiblity for External Switch Control】Our SONOFF matter light switch can easily connect to the momentary switch, door exit switch, SPDT switch, latching switch, and even dry contact sensors. 【Device Sharing】If you install this Smart Relay Switch, you can share the device control right to your families or friends who have eWeLink account, so they can remote control the house's device on/off state or check the device on/off state, so they also could enjoy the smart and convenient life. 【Compact and Safe】The WIFI Smart Switch size is 39.5x33x16.8mm, is 40% smaller than MINIR2 and 60% smaller than MINIR3, is very small and compact, is suit for various mounting boxes including the smallest 86/EU type. Also, The Smart Light Switch MINIR4M has obtained TÜV, CE, and FCC certifications, ensuring enhanced safety and reliability for your use.