Relay (double channel)

A double-channel relay module is an electronic switching device that contains two independent relays, allowing a microcontroller such as Arduino to control two separate electrical loads. It can be used to switch devices such as lights, motors, fans, pumps, and other electrical appliances. The module allows low-voltage control signals from the Arduino to operate higher-voltage or higher-current circuits, with electrical isolation between the control and load sides. It is commonly used in home automation, robotics, and electronic control projects.