2 Channel Lo Trigger 5V Relay with OptoCoupler Protection Microcontroller Development Board Accessories
Relay Capacity : AC 250V 10A / DC 30V 10A Transistor Driven Operating Voltage : 5V Dimension : 4.5 x 4.6 x 1.8cm Power Indicator : Green Relay Indicator : Red
3-pin connector on the left 1, JD-VC supply voltage relay 2, VCC supply voltage module 3, GND Module ground
4-pin connector on the right 1, VCC 5V supply voltage module 2, 1N1-1N2 relay control interface connected to the microcontroller IO port 3, GND Module ground