I'm trying to connect a relay/switch to a Garage door(Lift Master). I know that there are two wires to trigger the garage door. I'm not sure how it works exactly. I'm trying to control the garage door remotely (greater than 1 mile).
How do you trigger the door to open with the wires only?
How do you trigger the door to close with the wires only?
Is there any risks to shorting the two wires together?