About this item A New Idea For 3 Way Control: Can be used as a single-pole or 3-way circuit (you need to buy 2 light switches ). 3-way multi-control association to control 1 light with multiple switches; anti-scratch tempered glass panel suits any home decor and allows for effortless touch control; you can multi-control associate this switch to multiple different switches. Control from Anywhere: Non-interference control mode; allows the switch to be controlled via Smart Life, touch control, voice; each control method works independently; achieve multi-control by associating to other smart switches. Hands-Free Voice Control: Compatible with Alexa and Google Home for hands-free voice control; can also be controlled via Smart Life/Tuya app anytime, anywhere; setting relay status and remembers last relay status optional when powered off, backlight switch On/Off. Timer Function: Take full control of connected appliances with timers, schedules, and the countdown (1/5/30 mins, 1 hour, etc.) with the app; share control with family and friends for added convenience. Start Smart Life With SmartBit: Neutral wire is required in your switch boxes to operate correctly; only supports 2.4 GHz network; offers easy pairing via WiFi and Bluetooth connectivity; includes a full 2-year warranty and 60-day refund guarantee for complete satisfaction.