This Wi-Fi Relay Module features a built-in ESP8266 Wi-Fi chip and microcontroller, enabling wireless relay control via smartphone apps over a local area network (LAN). Designed for IoT projects, it allows seamless control of high-voltage devices like lights and appliances remotely through a simple serial interface.

The 1-channel relay supports up to 250V AC or 30V DC, making it ideal for smart home automation. An onboard status LED indicates power and relay activity, while a clear click sound confirms switching. The included ESP8266 handles all wireless communication, requiring initial UART configuration before standalone operation.