Description
The four-channel relay module contains four 5V relays and the associated switching and isolating components, which makes interfacing with a microcontroller or sensor easy with minimum components and connections. The contacts on each relay are specified for 250VAC and 30VDC and 10A in each case, as marked on the body of the relays.
Four-Channel Relay Module Pinout
| Pin Number | Pin Name | Description |
| 1 | GND | Ground reference for the module |
| 2 | IN1 | Input to activate relay 1 |
| 3 | IN2 | Input to activate relay 2 |
| 4 | IN3 | Input to activate relay 3 |
| 5 | IN4 | Input to activate relay 4 |
| 6 | VCC | Power supply for the relay module |
| 7 | VCC | Power supply selection jumper |
| 8 | JD-VCC | Alternate power pin for the relay module |
