Hi. But, what do you use to actually close the door? I have seen some that just raise/lower a door on a string that winds up with a motor, but that doesn't seem like enough to me. I have a coop and have passed on automating it for a few reasons, including exposure of the electronics to weather and chicken dust. Switches and relays don't actually move a door, and for me I would like it more than just physically closed, but latched or at least pressed close to keep things like coyotes, foxes, etc from prying it back open. Like a motor that drives it closed and maintains force on the closed door, or I thought of using a valve actuator (like the ZOOZ ZAC03) to hinge the door closed and hold it there.