Posted by Jim on December 13, 2007, 11:21 am
Anybody know how much power one of those motion-sensing infrared
fixtures draws to power the emitter and sensor? IOW, what's it draw when the
light's not on?
TIA,
Jim
Posted by Anthony Matonak on December 13, 2007, 2:22 pm
Jim wrote:
> Anybody know how much power one of those motion-sensing infrared
> fixtures draws to power the emitter and sensor? IOW, what's it draw when the
> light's not on?
Most of these are passive IR devices, they don't have emitters.
I've got a 9V version that only needs a new battery about once a year
or so.
This one says 15mA at 12V.
http://www.allelectronics.com/cgi-bin/item/IRD-12/search/PIR_DETECTOR_.html
Anthony
Posted by Solar Flare on December 13, 2007, 11:43 pm
X10 makes motion detectors that run on two AA cells for about two
years and they transmit wireless information also.
>-> Anybody know how much power one of those motion-sensing
>infrared
> -> fixtures draws to power the emitter and sensor? IOW, what's it
> draw when the
> -> light's not on?
> -> TIA,
> -> Jim
> The one I have is stone cold. It can't be dissipating much power.
> dow
Posted by Jim on December 14, 2007, 10:01 am
>-> Anybody know how much power one of those motion-sensing infrared
> -> fixtures draws to power the emitter and sensor? IOW, what's it draw
> when the
> -> light's not on?
> -> TIA,
> -> Jim
> The one I have is stone cold. It can't be dissipating much power.
I didn't know if anyone had KAW readings or not. I have one spot in the
house where a hallway was converted into a laundry room, and the switch is
nearly impossible to get to as it is behind the dryer in the farthest corner
of the room. A motion sensing fixture makes much more sense.
Thanks,
Jim
> dow
Posted by Neon John on December 14, 2007, 11:19 am
> I didn't know if anyone had KAW readings or not. I have one spot in the
>house where a hallway was converted into a laundry room, and the switch is
>nearly impossible to get to as it is behind the dryer in the farthest corner
>of the room. A motion sensing fixture makes much more sense.
A KAW isn't going to come close to measuring the tiny power consumption of a
motion
switch. Probably by at least an order of magnitude. The consumption will be
milliwatts of not lower. Your meter literally won't see the difference on
consumption.
John
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> fixtures draws to power the emitter and sensor? IOW, what's it draw when the
> light's not on?