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Product Name: 5V 4 relay with optocoupler protection blue for arduino

we have relay kit, if you want it, you can open below line:

this line with led relay :

this line With optocoupler relay:

Module parameters:

1 Size: 75mm (length) * 55mm (W) * 19.3mm (height)

(2) Weight: 61g

3.PCB Color: Blue

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

5 Relay selection of 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 for the system power, JD_VCC for the relay power. Default hair 5V relay, plug the jumper cap to

9 Relay Maximum output: DC 30V/10A, AC 250V/10A


VCC: positive power supply system

GND: System power supply negative

IN1 - IN4: relay control ports

Shipping list:

4-way coupler relay module with an (anti-static packaging)