This mini-designed intelligent WiFi module is suitable for wall switch boxes and can be easily hidden inside the existing wall switch box of a traditional switch without affecting your home decor or functionality. More importantly, your traditional switch and this smart module can operate independently in a non-interference mode. The mini WiFi switch supports both AC and DC power with a working voltage of AC90-250V 50/60Hz or DC15-250V. It supports 1-way or 2-way switching (two switches controlling one light); only one of the two switches needs to be connected to convert the circuit into a smart control system. The mini WiFi switch is compatible with Alexa and Assistant, allowing you to control home devices using voice commands for a hands-free experience. Use the app to fully control connected appliances via timer, schedule, and countdown (1/5/30 minutes, 1 hour, etc.). Share control with family and friends for added convenience. Control remotely using smartphones through the Smart Life or Tuya apps. Note: The router must support 2.4GHz Wi-Fi (5.0GHz is not supported), but the smartphone network is not limited (2G/3G/4G/WiFi networks are supported). Material: Plastic Color: As shown Package Contents: 4 x WiFi light switches Only the items listed are included; other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3cm.