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That’s all on Arduino Relay Tutorial: Control High Voltage Devices with Relay Modules! Now that you know what is the relay and how it works, possibilities are endless as you can control many high voltage devices using various devices like the TV remote,

In the case of an Arduino that operates at either 3.3V or 5V DC, connecting a relay allows us to operate a device that uses 110V to 240V AC. Simply put, with a relay your Arduino can control your coffee maker, a lamp, or other high voltage devices. In thi