The 2-Channel Relay Module is a versatile relay control board designed for switching and controlling electrical loads using a low-voltage control signal. It features two independently controlled relay channels and SMD optocoupler isolation for improved electrical isolation, stable operation, and reliable signal control.

Each relay channel supports high-trigger and low-trigger operation, selectable through a jumper. This provides flexibility when interfacing the module with different microcontrollers, development boards, and control systems.

The module is suitable for Arduino, Raspberry Pi, microcontroller projects, automation systems, IoT applications, robotics, and other electronic control projects where isolated relay switching is required.