Hey all i have the following 5v relay board: [image] Please ignore the light bulb hook up. That was an example on the website that had the same relay :slight_smile: And i am looking to hook one of the relays up to a monetary switch: [image] Now this is what i am guessing is the way i connect t…

Switch hookup with relay

Grumpy_Mike November 2, 2012, 3:53pm 2

Do not connect the ground as it bypasses any isolation the relay gives you.

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