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Module Parameters:
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
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