5 Pin Relay Diagram. Here we look at relay switch pin diagram and the different kinds of relay switches. When the relay receives a HIGH signal at the signal pin, the electromagnet becomes charged and moves the contacts of the switch open or closed.
The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with Arduino.
It can be used to control various appliances and equipment with large current.
Identify the hot power wire (red wire in the diagram above) in the cord leading to the light bulb and make a cut. The input pins of the module work inversely. We just need: Connect an Arduino's pin to the IN pin of the relay.







