Question on Motion Detectors

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Subject Author Date
Question on Motion Detectors geezer 11-03-2005
Posted by geezer on November 3, 2005, 2:56 pm
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Do they work 24 hours or just at night? That is, will the light sense
motion and turn the light on even at noon?

Dumb and curious.

Geezer

Posted by - Tom - on November 3, 2005, 4:24 pm
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Motion detectors used on their own in a circuit, such as in an area
intrusion system or burglar alarm, will always work while the system is
armed.
Motion detectors used in conjunction with a day/night electric eye, of
the type used in outdoor floodlights, will work only when the electric eye
senses that the ambient light is low enough to turn on the floodlight. The
motion detector and the electric eye are in effect two switches wired in
series between the source power and the floodlight. If either switch is open
then the floodlight remains off.

Tom

> Do they work 24 hours or just at night? That is, will the light sense
> motion and turn the light on even at noon?
>
> Dumb and curious.
>
> Geezer



Posted by on November 3, 2005, 6:23 pm
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> Motion detectors used on their own in a circuit, such as in an area
> intrusion system or burglar alarm, will always work while the system is
> armed.
> Motion detectors used in conjunction with a day/night electric eye, of
> the type used in outdoor floodlights, will work only when the electric eye
> senses that the ambient light is low enough to turn on the floodlight. The
> motion detector and the electric eye are in effect two switches wired in
> series between the source power and the floodlight. If either switch is
open
> then the floodlight remains off.

Agreed. So just bypass the electric eye and it will work 24/7 4 U.



Posted by geezer on November 3, 2005, 6:59 pm
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>
>> Motion detectors used on their own in a circuit, such as in an area
>> intrusion system or burglar alarm, will always work while the system is
>> armed.
>> Motion detectors used in conjunction with a day/night electric eye, of
>> the type used in outdoor floodlights, will work only when the electric eye
>> senses that the ambient light is low enough to turn on the floodlight. The
>> motion detector and the electric eye are in effect two switches wired in
>> series between the source power and the floodlight. If either switch is
>open
>> then the floodlight remains off.
>
>Agreed. So just bypass the electric eye and it will work 24/7 4 U.
>

Thanks

My concern was that I installed one this noon and it lit the light
ONCE. Then never again. Maybe tonight after dark, I will know the
answer for sure.


Thanx agin

Geezer

Posted by on November 3, 2005, 11:53 pm
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>
> >
> >> Motion detectors used on their own in a circuit, such as in an area
> >> intrusion system or burglar alarm, will always work while the system is
> >> armed.
> >> Motion detectors used in conjunction with a day/night electric eye,
of
> >> the type used in outdoor floodlights, will work only when the electric
eye
> >> senses that the ambient light is low enough to turn on the floodlight.
The
> >> motion detector and the electric eye are in effect two switches wired
in
> >> series between the source power and the floodlight. If either switch is
> >open
> >> then the floodlight remains off.
> >
> >Agreed. So just bypass the electric eye and it will work 24/7 4 U.
> >
>
> Thanks
>
> My concern was that I installed one this noon and it lit the light
> ONCE. Then never again. Maybe tonight after dark, I will know the
> answer for sure.

Test it anytime by covering the eye with dark tape.







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