Feature:1. Wide voltage power supply (6~30v), supports micro USB 5.0V power supply, very convenient to use2. Come with optocoupler isolation, enhanced anti-interference ability, industrial grade circuit board, set parameters will always be remembered after power failure3. The interface is clear and simple, powerful, easy to understand, and meets almost all your needs4. There is one key emergency stop function (STOP key), with reverse connection protection, reverse connection does not burn5. Adding sleep mode, after enabling, automatically turn off the display without any operation within 5 minutes, any key to wake up6. Different OP, CL, LOP parameters can be set, these parameters are independent of each other and saved separately; all setting parameters are automatically saved when power offSpecification:Item Type: Relay BoardMaterial: PCBWorking Voltage: 6-30V, support micro USB 5.0V power supplyTrigger Signal Source: High-level trigger (3.0V-24V), the signal ground and the system ground are not in the same ground to improve the anti-interference ability of the system (also can be self-shorted to the common ground)Output Capacity: Can control equipment within DC 30v 5A or AC 220v5AQuiescent Current: 20mA, Working Current: 50mATiming Range: 0.1s-999min continuously adjustableService Life: More than 100,000 timesWorking Temperature: -40-85Special Attention: The relay output is a passive contact, uncharged output, and controls the on-off function of a line. .Package List:1 x Relay Board