1.[Installation Notes]The smart switch can replace single pole light switch. Not compatible with 3-way (multi-switch) lights. Neutral wire required. Support 2.4GHz Wi-Fi Only (Not support 5G). The switch allows to turn lights on or off, but no smart bulbs or dimming. 2.[Wireless ]With this Wi-Fi double switch, people can remotely control the lights by Smart Life&Tuya APP anytime and anywhere. You don't need to worry about leaving the lights on when in travel, office or staying away from home for a long time. 3.[Voice Control] Smart switch compatible with Alexa,Google home assistant, just a simply voice command can let Alexa / Google Assistant turn on/off the light for you, your hands and save time of walking around. 4.[Set Schedule & Scene]Control your lights from anywhere. Secure control using the Smart Life App when you are home or away. Custom schedules and set times, let your lights function automatically. On at sunset, off at bedtime.Create scenes to control a group of lights.