2 PCS Single Channel Relay / 1 Ch Relay Module - For SCM Household Appliance Control - 5V (WITH OPTOCOUPLER)

Description:

1. Normally open interface maximum load: AC 250V/10A, DC 30V/10A
2. SMD optocoupler isolation, strong driving capability, stable performance; trigger current 5mA
3. Fault-tolerant design, the relay will not move even if the control line is broken. Power indicator (green), relay status indicator (red)
4. The interface is designed humanized, and all the interfaces can be directly connected by wiring terminals, which is very convenient

Two module interface:

1. DC+: Connect the power supply positive pole (voltage 5V)
2. DC-: Connect the power negative pole
3. IN: Low level (3.3V) control relay pull in

Relay output terminal:

1. NO: Relay normal open, the relay suspends before pulling in, and then short-connect with the COM
2. COM: Relay common interface
3. NC: Relay normal close, short connected with COM before pulling in and suspended after pulling in