Description: 1. Refit ordinary non-smart appliances or equipment into smart devices. Such as refitting a desk lamp into a smart desk lamp, and the mobile phone can control the switch of the light. To turn the downlight into a smart downlight, you only need to connect a smart switch module to the switch, and then Alexa/Google assistant can control the light switch. 2. Mobile APP control. Control the device's power on and off, timing, countdown and other functions through the mobile phone. As long as the mobile phone has a network, the switch module at home can be controlled globally. 3. Voice control. Support voice assistants such as Tmall Genie, Alexa, Google Home, and realize functions such as switches; "Alexa, turn on the kitchen lights." You can turn on the lights in one sentence and enjoy a convenient smart life. 4. Timing. You can control the switch, timing, countdown and other functions of the device through your mobile phone. This can be ordered: turn off the lights in the living room after 2 hours. 18:15 Turn off the oven. Turn on the boiler at 21:00. You can also time the device when you are not at home. (APP: Smart Life/TUYA Smart) 5. Group control. The lights can be grouped to achieve unified control (simultaneous switching, timing, etc.); 6. The Internet of Everything. Through settings, it can be linked with other smart scenes to make life smarter; for example, set the home scene: automatically turn on the living room lights, TV, and air conditioner. 7. Sharing and security. The main account can be shared with other family members, and the functions and settings are completely retained and copied; security: once the main account adds a light, the light will be hidden and other users can no longer find and add; it needs to be actively shared before others can use it it. 8. Bluetooth fast matching. Turn on Bluetooth, the phone will quickly find the device, speed up the connection, and stabilize the connection. 9.State memory. Resume the power after the power failure, without worrying about the change of the equipment state, and maintain the state before the power failure. It was in the open state before the power was cut off, and the open state is automatically restored when the power is turned on again. (Can be set to open, close, power off memory mode) 10. Three wiring methods.(2-way/1-way/non switch)