Main Features:  1. 2/3-way multi-control association to control 1 light with multiple dimmer 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 in Smart Life App.  2. Non-interference control mode; allows the switch to be controlled via Smart Life, touch control, voice, and remote with RF433 frequency and 1527 encoding remote switch(not included); each control method works independently; achieve multi-control by associating to other smart switches.  3. Compatible with Alexa and Google Home for hands-free voice control with 0%-100% dimmable; 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.  4. Take full control of connected appliances with timers, schedules and countdown (1/5/30 mins, 1 hour, etc.) with the app; share control with family and friends for added convenience.  5. Neutral wire is required in your switch boxes to operate correctly; only supports 2.4 GHz network; offers easier pairing via WiFi and Bluetooth connectivity.    ·Update1: Multi-control in a much easier way.  ·Update2: New pairing mode with WiFi+Bluetooth.  ·Update3: Backlight ON/OFF optional.  ·Update4: Relay status adjustable when power off.  ·Update5: RF frequency built-in for RF remote control.    Package included:  1 x Switch EU/US,  OR  1 x Controller