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Window sensor question - can I daisychain a group?
Posted 26 March 2012 - 10:41 PM
If one window is open, it would show that the whole group was open, right?
Or would all of the windows in the group need to be open or closed to make the connection?
Posted 27 March 2012 - 12:58 AM
You hook the sensors up in series and use a single EOL resistor at the end of the loop.
Posted 27 March 2012 - 01:22 AM
If you hooked it up in series, any one would break the chain. If you mistakenly wire in parallel, then you'd need them all open to trigger.
Posted 27 March 2012 - 07:45 AM
Since I have over 30 windows in my home, it made sense to me to daisychain the rooms into "groups", and they told me that would be no problem.
Now the guy tells me it will only work if all are open, otherwise the sensor won't trip.
This really isn't sitting right with me, and I'm almost positive they simply wired it wrong.
What can I do at this point? The plaster is up, the paint is on, I'm completely moved in, and a lot of the windows are not accessible through an attic or the basement.
Posted 27 March 2012 - 09:36 AM
To be perfectly honest, the fact that drywall is up isn't that big of a deal - he can open the drywall and fix it and have it re-rocked and textured/painted in 2 days or less. You'll cause way more heartburn trying to avoid cutting drywall than if you just cut it open and fix it afterwards.
Posted 27 March 2012 - 12:26 PM
If he did not use a single junction, then you would have to tear into more drywall most likely.
Was this person a licensed security installer?
Posted 27 March 2012 - 02:04 PM
Posted 28 March 2012 - 01:49 AM
now if you were dealing with this all on your own with no installer, I'd suggest a good tone/probe, and trace the wires - try to find the point where it's loudest, cut the wall open, and see what's there. Don't be scared of drywall! It's so easy to get drywall fixed/textured so you can't tell.. it's more important to get your components working correctly.
Posted 28 March 2012 - 07:57 AM
I do hope they are willing to step up and fix it, but since they didn't own up to the mistake as soon as it was realized I'm a bit hesitant to place my faith in that hope.
What's the easiest / best way to test this? I think it's pretty apparent that they were wired parallel rather than in series, but I think I need some kind of evidence to back up my claim other than the obvious "it doesn't work like it should".
Posted 28 March 2012 - 11:11 AM
Like I stated in my earlier post, you really need the person who originally wired your house up and hopefully they will know how they ganged the windows together, so you only have to tear up those drywall sections.
Honestly, I'm not sure how you would go about fixing this any other way.
Just for grins, if you look back at your panel, how many wired zones are there compared to the number of your groups? That is, did the installer run a single wire back to the panel from each group?
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