2 channel relay module

1 Dimensions: 50.5mm (length) * 38.5mm (W) * 18.5 (H)

2 Weight:. 31g

3.PCB Color: Black

4 board four weeks with four screws holes, hole diameter 3.1mm, easy to install and fixed

5 relay of high quality loose music relays SPDT. A common terminal, a normally open, one normally closed terminal

6 optocoupler isolation, good anti-jamming

7 low pull, high release. Energisation status indicator light, release status LED is off

8.VCC of system power, JD_VCC relay power. You can plug in jumpers