Compatible with Models: SONOFF MINIR4M WiFi Switch is a Matter certified device. It can work with Matter devices from other brands and be integrated with Matter compatible platforms such as Alexa, Apple Home, Google Home, etc. Controlling all smart devices through an app is no longer a fantasy. Mini Size The mini size of the Alexa MINIR4M switch fits different mounting boxes, including the smaller type 86/EU, its volume is 40% smaller than MINIR2 and 60% smaller than MINIR3 External Switch Control The MINIR4M can be easily connected to the instant switch, door exit switch, SPDT switch, lock switch and even dry contact sensors. Relay Disconnect Mode:The MINIR4M smart WiFi switch has "Relay Separation" mode, which means that the states of the external switches and relay are separated, so that the operation of the external switch button does not affect the relay state. SAFE AND RELIABLE MINIR4M Alexa Smart Light Switch has TÜV, CE and FCC certifications that ensure more safety and reliability during your use.