Main Features: Dimmable Bulb Only This smart dimmer switch only supprt dimmable LED AND INC. Please confirm your bulb's specification before placing order. App Remote Control Remote control lightings of your house via Smart Life app from anywhere at anytime. Voice Control The wifi dimmer switch works with Alexa and Google Home Assistant to conveniently control the light with simple voice command when you are on go. Timing Function Create schedules to automatically turn the light on with the preset brightness or off at specific times. Perfect to create different mood lights with specified brightness for your daily activities, bedtime or TV time, sunrise or sunset, etc. Stepless Dimming Adjust the light to a certain percentage by your original switch, Smart Life App or voice command; get the right light intensity while watching movies, reading, wearing makeup, etc. The switch remembers and turns back on to the last light setting when powered off. Group Control You could set up a group for multiple dimmer switches in the app, then you will be available to turn on/off the lights by one-tap. Tuya ZigBee Hub Required A Tuya ZigBee hub is a must to the ZigBee smart switch for app remote control and voice control. Also, you can link other Tuya ZigBee products with the hub to realize a complete smart home system for your house. SPECIFICATION: Shell Material: PC/Flammability Rating: V0 Rated Voltage: 100~240V 50/60Hz Rated Current: 10A Max. Power-1 Gang: LED/INC 150W Max. Power-2 Gang: LED/INC 100W/Gang Size: 39.2*39.2*18mm Physical Two-way Control: Support WiFi Standard: IEEE 802.11 b/g/n 2.4Ghz Only ZigBee Standard: IEEE 802.15.4 WiFi Standard: IEEE 802.11 b/g/n 2.4Ghz Only Hub Requirement: Tuya ZigBee hub required Operation Humidity: 90% Operation Temperature: -10~40 App: TuyaSmart/Smart Life Voice Control: Compatible with Alexa Google Home