Usage COMPATIBLE WITH: Alexa, Google Assistant/Home Wiring--L+N (Wifi type need Neutral wire.) Color--White App Name--Tuya / Smart life (Compatible with Android&iOS) Size--115 70 35mm Working Frequency- 2.4GHz Wireless Standard- IEEE802.11b/g/n Standard -US Certificate -FCC/ ETL Maximum Loads--500W Incandescent (1-Gang); 400W Incandescent (2-Gang); 300W Incandescent (3-Gang); 150W Dimmable CFL/LED Key Features: Smart Dimming Replace your normal switch with a fantastic dimmable smart switch that can be controlled remotely from a remote, sensors or your smartphone or tablet. LED Noctilucent Navigation When you're in a dark room, it will guaid you to fing you smart switch easily. Complete Control Control your lights and appliances, schedule a timed event or create a custom scene from anywhere in the world, at anytime of the day. Smart 3 Way Switch Imagine setting the perfect lighting without leaving the sofa, and using your smart phone to remotely control the lights throughout your home. APP / Voice Control Work with Amazon Alexa and Google Assistant, Turn on/off lights with voice commands. Compatible with Android 4.1 & iOS 8 or higher. Support 2.4GHz and 4G Wi-Fi, Unable to work 5G