1.Easy guided install: Neutral wire is required, standard wall plate size. No need to understand complex switch, wiring or master vs auxiliary switch configurations 2.Control from anywhere: Monitor your light status. Turn electronics on and off from anywhere with your smartphone using the case app, whether you are at home, in the office or on vacation 3.Voice control: Enjoy the hands-free convenience of controlling the lights in your home with your voice via Amazon Alexa or Google Assistant; perfect for times when your hands are full or entering a dark room 4.Scheduling: Use timer or countdown schedules to set your smart switch to automatically turn on and off while you're home or away rated voltage: 100-250V Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Electrical life: 100000 applied range :interior Working temperature: -10-45℃ specific function: Remote control Connection mode: Zero fire line Installation hole spacing: 118x72mm mechanical life: 100000 times system support: Graffiti intelligence the protection grades: IP20 Wifi type: 2.4Ghz Specifications: Three switches dual control Colour:White Material:PC flame retardant Size:118 x 68 x 33mm Package Contents: 1 x switch button 1 x face frame 1 x package of installation accessories 1 x English instruction manual