DC 12V Dual Channel Relay Module With Opto-Isolation For Arduino H/L Level Triggered Control System

Module description:

1. The module adopts high-quality relays, normally open interface load: AC 250V/10A, DC 30V/10A;

2. Adopt SMD optocoupler isolation, strong driving ability, stable performance; trigger current 5mA;

3. The working voltage of the module is 12V;

4. The module can be triggered by jumpers to set high or low level;

5. Fault-tolerant design, even if the control line is broken, the relay will not act;

6. Power indicator (green), relay status indicator (red)

7. The interface design is humane, all interfaces can be directly connected through the terminal block, which is very convenient

8. Module size: 50mm * 41mm* 18.5mm (length * width * height)

1. DC+: connect to the positive pole of the power supply (the voltage is according to the requirements of the relay, there are 5V.9V.12V and 24V options)

2. DC-: Connect to the negative pole of the power supply

3. IN1: 1 signal trigger terminal, you can set high or low level to control the relay to close

1. NO1: 1 relay normally open interface, the relay is suspended before being closed, and shorted to COM1 after being closed

2. COM1: 1 relay common interface

3. NC1: 1-way relay normally closed interface, short-circuited with COM1 before the relay is closed, and suspended after being closed

4. NO2: 2-way relay normally open interface, the relay is suspended before closing, and shorted to COM2 after closing

5. COM2: 2 relay common interface

1.S1 is the high and low level trigger selection of 1 relay;

2.S2 is the high and low level trigger selection of 2 relays;