This module has a 1×6 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays.
The pins are marked on the PCB:
- GND – Connect 0V to this pin.
- IN1 – Controls relay 1, active Low! Relay will turn on when this input goes below about 2.0V
- IN2 – Controls relay 2, active Low! Relay will turn on when this input goes below about 2.0V
- VCC – Connect 5V to this pin. Is used to power the opto couplers
Maximum output relay: 30V / 10A DC, 250V / 10A AC
