Tricky momentary to momentary

Glad you got help before I got back. Sounds like it's on the money.

Let us know how it works out.

Hey Guy's..worked an absolute treat..fantastic.

Will donate to this great site and no doubt will be back witn some crazy new schemes...

Thanks!!

Guy's, have disovered a minor/major flaw which should be easily rectified?

When the 12v is cut to the relay the door lifts...this will cause security issues as the power to my home does get cut off from time to time.

Would a diode inserted the correct way solve this?

Thanks.........warned you I'd be back..he he

Well I am surprised the door will lift if there's no power. Do you have some kind of a back up power system for the garage door?

I can't imagine how a simple diode can help in this case if a break in 12v to the relay is causing the door to open.

If I am understanding your problem correctly (once again I think some more specifics are required) you need some kind of a 12v backup system to keep 12v on the relay at all times. Any standard 12v security back up battery system should do the trick (they are relativly inexpensive so shop around) but once again, how does the door open if powers out??

I am about to retire for the evening so I will check back again in the am.

take care............

I think you are on the money with the UPS back up...

The power goes off frequently so a decent size back up system will allow me to open the garage door at the same time as keeping 12v to the relay.

Also I wasn't too clear buddy (again)  :-)

I basically have the 12v transformer plugged into a 240v socket which powers the realy and autolock system, when i switched this off power was still present at the garage door motor from another socket, so it lifted.

I guess if there was a total power loss the door couldn't lift..oops..my bad!!

Still the UPS would be a bonus..

Thanks Bud..

Alrighty then, that mystery is solved.

Appears the root of the power problem comes down to the utilities company in your area.

Where I live a hurricane knocked out the power to my home for over 2 weeks. Just had to get used to cold showers in the dark. A back up generator would have come in quite handy. Oh well, such is life.

Take care.