Would these be too strong to be used on home-alarm window contacts?
2027037
I'm not sure that this would be a good application for these magnets. The magnetic field produced is very strong, but decreases rapidly with distance. I would imagine that you would have problems holding them in place. I would suggest that you buy the contacts and install them according to manufacturer's recommendations. For example, one well-liked offering on Amazon is Interlogix Door/Window Terminal Contact, Surface Mount, White by UTC (Formerly GE Security/Sentrol). There are several alternatives listed. While it might be nice to engineer your own system, these contacts are inexpensive and easy to install. This, I believe is preferable to using these magnets. This appears to be a case of not reinventing the wheel.
2116879
Don't think they would be strong enough, but they should be the standard 1/4" size that the battery impact drivers use.
902357
I used them with sheer door panels and they were fine as far as thickness goes. The magnets were not strong enough to allow you to pull the sheers taut. If you just place them so they are not under too much tension, they are fine.
83384
I don't think so, at least I wouldn't use them for that purpose. Most of them were broken when I received them, sent them back.
1577519
The contact could only be mounted to one door which would leave the other with no alarm. Unless, you mounted the the whole alarm unit. To one door and the contact to the other door. That wouldn't look good.
25448
As long as you have self-closing hinges, these should work. They are not connected to the hinges in any way. They are designed to soften the closing action when self-closing hinges close the door.
1656303
If I wanted to stack them and they didn't make good contact, I'd simply make my own connector and put it between them. I suppose as long as they're PCB protected, there should be no problem.
2109474
The magnets are pretty good. I would say that they probably would as long as nothing is creating more force hitting them. Such as an open window with a strong breeze coming thru. If just using the sun blockers for a patio narrow window for example go for it. Make sure you are using them with METAL. I have aluminum in part of my house and used double faced tape. (the magnet can be turned around) Anyway.. yes they hold much more..
849815
Yes they are really simple to switch and use, it would be best to put them up high out of reach so they can't turn them off/on. :)
684580
These contacts are recessed and can be connected to a wireless transmitter. What type of alarm do you have?
416529
It depends on if your alarm system is looking for a switch closure or a voltage level. If your system is for your home then this should work for the majority of the home systems on the market. For higher end systems this may not work.
1741982
It works for me. As long as you don't exceed about half an inch between the two planes of the alarm, you should be good. I used stacked double-side tape to bring the two alarm pieces to closer alignment and have had zero issues (have used these alarms in two houses over the course of the last five years)
103060
Contact sensors require movement of window frames (i.e., separation) to work. Most likely that anyone who breaks glass would then moves frames rather than break out all the glass to effect entry, but if you're worried about that you can supplement contact sensors with interior motion sensors and even glass-break sensors. I've tried motion sensors--they work well. Haven't tried glass break sensors.
10466
I'm not sure what you are asking. I have an old hard-wired alarm system and I replaced some windows in my house and used these glassbreak detectors on them. From what I understand wireless systems are now the norm and these detectors won't work for them.
990284
As long as the power demand does not exceed 80watts (rated load for contacts). nothing else is needed as long as you have a Zwave compatible network.
1322125
I think they would work fine. However I would make sure they were properly wrapped in electrical tape.
2257489
Usually no...these tend to only work with old analog systems. But even if it did, it tends to defeat some of the purposes since if your power/internet is out, your alarm system won't work either.