Relay Modules are used to control high-power devices with low-power signals, enabling the switching of electrical loads such as motors, lights, and heaters. These modules isolate the control signal from the load, ensuring safe and reliable operation. Relay modules are essential in home automation, industrial control systems, and robotics, where switching between different power levels is required.

With their ability to handle high currents and voltages, relay modules are crucial for controlling heavy electrical loads. For engineers working on automation projects, relay modules provide a reliable and efficient solution for switching and controlling high-power devices.