Sorry about the newb question but can someone describe the proper way to physically hook up the relay board for example to a lamp. I searched but could not find a visual example.
Thanks. I should have specified I currently own the device. My question is specific to wiring. I take it that the relay needs separate power 12v source but I have never used a relay so being cautious.
Can you clarify “contact 1 or contact 2”?
Basicly this is what you have to wire. And then control the wired relais from your code.
You mean in a practical situation? it’s just a educational drawing
 these are changeover contacts no?
[edit2] yes these are changover contacts.
Thanks David thats basically what I wanted to see.