1. No neutral wire required for easier installation; anti-scratch tempered glass panel suits any home decor; 1 A capacitance is required for use. 2. Non-interference control mode; allows the switch to be controlled via app, touch control, voice, and remote with RF433 frequency and 1527 encoding (remote not included); each control method works independently. Compatible with Alexa and Google Home for hands-free voice control; can also be controlled via Smart Life/Tuya app anytime, anywhere; remembers last relay status and backswitch setting when powered off 4.Take full control of connected appliances with timers, schedules and countdown (1/5/30 mins, 1 hour, etc.) 3. with the app; share control with family and friends for added convenience 5.No neutral wire required and only for 1-way circuit; only supports 2.4 GHz network; much easier pairing mode for adding the device with WiFi and Bluetooth connectivity; includes full 2-year warranty and 60-day refund guarantee for complete satisfaction