Installation Notice: Neutral Line is required, support both 3 -way and Single-Pole, 2.4G Wi-Fi ONLY (Not Support 5G), NOT Dimmer Switch, Double check the dimention of this wifi switch before ordering
3 Way 4 Way- This switch can work with your exisitng old switch to build a 3-way / 4-way circuit. Only replace one of them by this Wi-Fi switch
Specifications: 100-240V, 15A(Max), 50/60Hz. This wifi smart switch can work in most household electricity environment.
Other Functions - WiFi smart light switch compatible with Alexa and Google Home for Voice Control (Smart Life Skill). Free App (Smart Life App) is availabe for both iOS and Android devices, Schedule, Timing, Sharing, IFTTT DIY to form an interesting smart home automation system
Warranty: [Purchase from MJ ONLY] Martin Jerry Promises 90-Day 100% refund, 1-year Quality Warranty for it's Smart Home Devices on Amazon, like WiFi Smart Plug, Plugs, Smart Switch, Wall Switches, Smart Bulb, Homekit smart plug