They're an optional add on for vault type garages and storage units that
have no other entry point.

http://www.naturalhandyman.com/iip/i...infgar61i.html

http://www.aaaremotes.com/emrelkit.html

There's no use for them on standard home garages where's there's another
door into the garage.

s



"DerbyDad03" wrote in message
...

Never heard of that type of set-up before. Sounds interesting, except
for the need to carry around (or hide) a key for the very, very rare
cases where I would need to open the opener-controlled door from the
outside during a power failure. I assume this is only required for a
garage where the only way in is through the opener-controlled door.
Otherwise, why wouldn't I use another entrance and pull the cable from
the inside?