If you have a garage without and external openings other the the garage door and have an opener on it then it is MANDATORY that you have an external release on the door.
Power failures are temporary.
But there are many things in the opener that can fail as can the power wiring.
Here are a couple of other universial releases.
http://www.aaaremotes.com/emrelkit.html
http://www.aaaremotes.com/key-release-lock.html |
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