IPVMU Certified | 02/24/16 07:30pm
You cannot use wireless here?
IPVMU Certified | 02/24/16 07:35pm
Contact the middle door and use something like this:
Shoot a photocell across the opening.
Simple Idea I used recently,
Judging from the picture it looks like a door that just goes up and down (not much inward tilt)
Get the contact mounted then run your wire to the center and up to the top of the rollup door, then run a piece of coiled wire straight to the trusses. (you might need to add a piece of kindorf if you're not right below a truss)
How about using a set of these Magnum Shooters, one on the rolling door and one on the rolling door frame, to energize the reed contacts on the inner door:
Silva Consultants | 02/24/16 11:49pm
Back in the old days, we used to do this sort of thing all the time. We would install window foil on the glass in overhead doors and then connect it using either a long coil cord or a disconnecting door cord . If there was a door within the overhead door, the contact switch would be connected in the same way.
Both options have their problems, but if I had to choose, I would probably use the disconnecting door cord. It will automatically pull apart if someone forgets to manually disconnect and opens the door, but if this happens too often, the cord will eventually wear out and gave to be replaced.
I would personally stay away from using something like the Magnum Shooters on an overhead door. Most doors of this type are sloppy and I think it would be difficult to get a consistent alignment of the contact points.
We did the coiled cord with strain relief all the time. Pull cords are good if the overhead is rarely opened. They do wear.
Ok, last suggestion.
What about using something like Assa Abloy's ICPT inductive power transfer module to power a wireless sensor (without batteries):
Doesn't need to touch, though still needs to be with 1/4 inch.
Wireless Door Power (Securitron ICPT)
IPVMU Certified | 02/25/16 02:17pm
Use a curtain motion from Visonic CH1D, we've used them for a while now. And lots of them. Mostly in-front of sliding doors that are prone to have door contacts broken. Almost any door contact you put on this is going to fail.
I would use an GRI 8297 gate kit to mount to the door track. Mount one set of contacts to the garage door, up and down. The other set to the man-door. Hook them up in series. If either door opens, you will get a notification. If the garage door opens, you will get a notification for both doors. If the garage door is down and the man-door opens, you will only get a man-door notification. Without using wireless, I don't think you are going to get all the way home.