$3.00 exc. GST
Relays are a perfect way of controlling higher power devices than the Arduino can handle, including high power lighting, motors, and other devices more than a couple of LEDs.
This particular relay was selected by us as they are switchable by Arduino digital pins.
Simply hook your relay to the power circuit like an ordinary single gang light switch, and connect the Arduino to the input and ground pins. Then send a digital HIGH/LOW to the pin to switch the relay on/off.
47 in stock