Arduino 2 way relay module with optocoupler protection 12V

2 way relay module MCU development board electronic accessories with optocoupler protection relay expansion board 

Module parameters:

1 Size: 50.5mm (L) *38.5mm (W) *18.5 (high)


2.PCB color: Black

3 board around with 4 fixed screw hole, hole diameter 3.1mm, easy to install and fix

4 relay selection of high-quality relays, single pole double throw. A common end, a regular start, a normally closed end

5 optocoupler isolation, good anti-interference

6 low level, high level release. When the light is on, the state indicator light is on

7.VCC for system power supply, JD_VCC for relay power supply. Insert jumper cap

Electrical parameters:
Supply voltage: 5VDC
Current: greater than 100mA

Wiring instructions:

VCC: system power positive

GND: system power supply anode

IN1--IN2: relay control port

Please do not respond to the contrary, causing the module to burn out