Relay Module, 16 channel 5V Module Control Board with Optocoupler Protection For Microcontroller

1-16 channels can be turned on/off at will, or any way. There are 4 fixing bolt holes for easy installation. PCB board size: 180MM (L) * 90MM (W) * 20MM (H) Adopting the industry's top quality isolated optocoupler, it has strong anti-interference ability and stable performance; the trigger current only needs 3mA. Output form: Directly connected to AC 220V 10A or DC30V 10A load. The interface design is user-friendly, and all interfaces can be directly connected through the terminal block, which is very convenient. Control voltage range: The trigger is low level 0-2V; the high level voltage cannot exceed 5V. 5V relay contact capacity 10A 250V with optocoupler protection. The onboard power supply module does not require an external power supply. The I/O port drive is active low. Each relay common terminal COM is independent, which is convenient for users to access different Each relay has a normally closed and normally open port. Can be used as a microcontroller development board module, can be used as home appliance control, can also be used as PLC expansion output.