12V one 1 Channel Relay Module With optocoupler ? Answered
I bought this 12V one 1 Channel Relay Module With optocoupler by mistake. And I can't figure out how to use it : http://www.ebay.com/itm/172217000566
I was supposed to buy a 5v relay to use it with a nodemcu.
But on this one I can't understand the pins.
Can someone help ?