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PIR's (Read 3618 times)
Hoopsman
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PIR's
Feb 4th, 2009, 9:48am
 
I have a large room in a house (6m X 3m) where there are 16 12V spotlights. The owner would like to have 2 PIR's fitted in the room, so that when the room is not being used the lights go out and when they walk into the room the lights come on. Is it possible to connect 2 PIR's to one switch? Huh
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Zambezi
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Re: PIR's
Reply #1 - Feb 4th, 2009, 11:43am
 
You get different types of PIRs, some can be connected to achieve what you want to do. Most need a neutral connected to the PIR so bear that in mind because quite often light switches don't have a neutral running to them.
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« Last Edit: Feb 4th, 2009, 11:44am by zambezi »  
 
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LSpark
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Re: PIR's
Reply #2 - Feb 4th, 2009, 9:43pm
 
You get what's called occupancy sensors, which are still PIR detectors but are specifically designed for the purpose that you require. All the ones I've fitted thus far require a neutral to operate though.

If no neutral is available AND you can't put one in, then perhaps a wireless type solution would suit you.
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« Last Edit: Feb 4th, 2009, 9:44pm by LSpark »  
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CWatters
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Re: PIR's
Reply #3 - Feb 5th, 2009, 8:39am
 
Bear in mind the lights may go out if they sit still in the room.
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londonman
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Re: PIR's
Reply #4 - Feb 5th, 2009, 8:47am
 
CWatters wrote on Feb 5th, 2009, 8:39am:
Bear in mind the lights may go out if they sit still in the room.


Made me smile!  Visions of elderly ladies sat stationary around a table, oiuja board in front.  

"Is there anybody there?  Is there anybody there?"  

Then the lights go out !!!! Grin
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Would all Third Party Apologists kindly mind their own business .....
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JerryD
Re: PIR's
Reply #5 - Feb 5th, 2009, 10:36pm
 
...........and as soon as one of them leaps up screaming, the lights come back on!

Grin Grin
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