Garage Door Parts, LLC ) said...

It's not very wise to operate an overhead door based only on the status of a
light. You should be able to see the door, anything or anyone that may be
under it before pressing that button...

Aren't garage door openers supposed to (and for a few years now) have a
sensor that stops and reverses the closing operation if anything gets in
the way?

Ours is just under two years now, and our cat (not the one used for an
audible indicator! ;-) ) knows well that she can stop the closing door.

That aside, railroads often use remote-controlled locomotives to shunt
cars in and near yards. If I shouldn't close my garage door remotely
when I can't see it, even though it will stop if someone or something
gets in the way, why should a railroad permit an operator operate a 2000 HP
locomotive from a quarter mile away? Of course, there are signs and strobe
lights on one of these locomotives warning you, while your garage door
posts no such disclaimer.

--
Calvin Henry-Cotnam
"Never ascribe to malice what can equally be explained by incompetence."
- Napoleon
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