A Dual Relay Module is a compact and convenient module that contains two separate relays. Each relay on the module can switch high-voltage devices (such as lights, motors, or home appliances) using a low-voltage signal from a microcontroller or other low-power logic device. Typically, these modules operate on 5V or 12V DC and are equipped with inputs for controlling the relays, as well as outputs for switching the connected high-voltage devices on and off.

    The key advantage of using a Dual Relay Module is its ability to handle high current and voltage, making it ideal for controlling electrical devices that require more power than a microcontroller can provide directly.