Wide Control Voltage Compatibility: Supports 5V, 9V, 12V, and 24V DC input ( jumper selectable ), making it compatible with most common control systems without needing an extra regulator.

Full Opto-coupler Isolation: Each channel features opto-isolation, physically separating the control side from the load side. This prevents ground loops and protects your MCU from potential damage caused by high-voltage spikes.

Low-Level Trigger (Active-Low): The relay activates when the signal pin is connected to GND (LOW), which is a common and safe triggering mode for many microcontrollers, reducing the risk of accidental activation during power-up.

High Load Capacity: Each relay can switch up to 10A @ 250VAC or 10A @ 30VDC, suitable for controlling a wide range of devices like lamps, motors, heaters, and solenoids.