Work with Traditional Switch -Free App Name: Smart Life or Tuya App Create Group in the app -You can create group as you like, then you can manage your devices more efficient. Wiring Diagram 1 Way Control(works with the wall switch) Compatible with 3 Way Swtich Patent Design -Dimensions: 46mm*46mm*18mm, can fit most EU wall box Specification Input Voltage: 100-250VAC, 50/60HzOutput Voltage: 100-250VAC, 50/60HzMax. Load: 16ADimensions: 46mm*46mm*18mmApp Name: Smart Life or TuyaWireless Protocol: ZigBee 3.0Works with toggle (forth and back) wall switch