Auto-closer For Garage Door Opener?



Question:
Is there such a beast as an automatic closer for a Garage Door Opener? I accidently leave my garage open *way* too often. What I'd love is some kind of sensor that noted if the door's been open for longer than, say, 5 or 10 minutes and automatically close it. You'd be able to turn it off, of course, when you really *did* want the door open for a long time. Any ideas where I can find something like this (or how I can build something like this?)

Answer:
I didn't opt for the automatic closer. Instead, I put a proximity switch on the garage door and door frame so that when the door was open a little low voltage red light would be on in the corner of the ceiling near our front entry inside the house. I also installed a door bell type switch near the entry so that I could close the garage door remotely when I found the light on. This works pretty well for us. There is only my wife and myself so it is easy to know if one of us may be in the way of closing the door. We don't need a warning alarm that the door is being closed remotely. Its likely that if anyone is in the way, they are up to no good anyhow.





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