- High power one channel relay module with a 30A load capacity, suitable for switching a wide range of devices and loads. - Optocoupler isolation provides enhanced separation between the control signal and the switched load, improving noise immunity and protecting your microcontroller. - Flexible power options: supports DC 5V, 12V, and 24V power inputs, giving you more choice for different systems and projects. - H level / L level trigger enables easy integration with Arduino and other microcontrollers, allowing active-high or active-low control as needed. - Relays are coil rated at 12V, delivering reliable and stable operation for 12V control applications and equipment. - Simple wiring and compact form factor make it suitable for project builds, prototyping, and compact installations. - Practical use scenarios: - In an Arduino-based automation project, switch a 12V motor or solenoid without exposing the controller to load spikes. - Control 12V lighting, fans, or small pumps in a home or workshop automation setup. - Use in robotics or lab automation to remotely operate 12V actuators and devices with electrical isolation for safety.