Finery 4 channel smart wifi switch retrofit kit, DIY Smart Home by using the free Smart Life App wireless control, Control your home appliances or electrical devices anytime and anywhere; WIFI control module, no need to program. No matter where you are, you only need to download a APP to connect the wifi and control the switch. Specification:Input Voltage: AC 110-250V 50/60Hz WiFi : IEEE 802.11 b/g/n Max Current: 5A/Channel Working Temperature:-10 to +50 degree Celcius Working Humidity: 40% to 80% RH Features:1.Independently control 4 devices: You can remotely turn ON/OFF 4 home appliances independently 2.Set time schedules for automatic control: It can create single / repeat / countdown timers to automatically turn on/off devices at the specified time. 3.Sync Status: Real-time devices status provided to App 4.Voice control: Wifi smart switch can work perfectly with Alexa-enabled devices like Echo/Tap/Dot, as well as G home. Just with a simply voice command, Alexa or G Assistant will work for you, turning on/off the connected devices at once. Control home appliances or electrical devices with your voice like this: “Alexa, turn on the light.” “Alexa, turn on Garage door.” Package Included: 1 x 4CH Smart WIFI Retrofit Kit 1 x Instruction Manual