Get a timer motion dectector hat fixs in a 1 gang box and i found one for 44
bucks at home depot...
- posted 15 years ago
Does an automatic shutoff energy saver light switch exist?
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- posted 15 years ago
Sure, my neighborhood bar has them in the restrooms-men's at least.
- posted 14 years ago
Ted Rubberford - The Man In The Taught Rubberoid Suit!
- posted 14 years ago
I've seen motion detector light switches at Lowes. I don't remember the
price, though. You set them for a certain delay, and after so much
non-movement, they shut off. What I'm looking for now is a humidity
activated switch that automatically turns on the bathroom fan when it gets
too steamy in there. :)
j
j
- posted 14 years ago
Bathroom fans with humidity switches are standard stock items.
Automatic (timer/pir) light switches are standard stock items.
I have PIR lighting on most of my stairs and hallways. They are supplemented by a number of push button (actually pneumatic) timer switches that I can operate with an elbow.
The one thing I very certainly do not want to do on the stairs is to try and find a light switch in the dark, or operate it when both hands are already full carrying something.
Nagging people to turn off hall and stairway lamps is one of life's pleasures that I would rather do without.
Automatic (timer/pir) light switches are standard stock items.
I have PIR lighting on most of my stairs and hallways. They are supplemented by a number of push button (actually pneumatic) timer switches that I can operate with an elbow.
The one thing I very certainly do not want to do on the stairs is to try and find a light switch in the dark, or operate it when both hands are already full carrying something.
Nagging people to turn off hall and stairway lamps is one of life's pleasures that I would rather do without.
- posted 14 years ago
| The one thing I very certainly do not want to do on the stairs is to try
| and find a light switch in the dark, or operate it when both hands are
| already full carrying something.
Or try to figure out whether it is currently off pointing up and needs to be pushed down, or is currently off pointing down and needs to be pushed up. That's why I won't have 3-way switches on stairs or even in hallways.
| Nagging people to turn off hall and stairway lamps is one of life's | pleasures that I would rather do without.
That's definitely something I will be considering in a lot of places.
Or try to figure out whether it is currently off pointing up and needs to be pushed down, or is currently off pointing down and needs to be pushed up. That's why I won't have 3-way switches on stairs or even in hallways.
| Nagging people to turn off hall and stairway lamps is one of life's | pleasures that I would rather do without.
That's definitely something I will be considering in a lot of places.
- posted 14 years ago
Those won't work properly with florescent lights.
> I don't remember the >price, though. You set them for a certain delay, and after so much >non-movement, they shut off. What I'm looking for now is a humidity >activated switch that automatically turns on the bathroom fan when it gets >too steamy in there. :) > >j
> I don't remember the >price, though. You set them for a certain delay, and after so much >non-movement, they shut off. What I'm looking for now is a humidity >activated switch that automatically turns on the bathroom fan when it gets >too steamy in there. :) > >j
- posted 14 years ago
Why not? Other than cycling more often, which hastens early end of
life, they work fine. I have had a motion sensor on my garage lights
for years.
- posted 14 years ago
It probably has line and neutral (return) in, rather than just line in
and line out and uses a miniature relay to switch the load on/off with
no dimming function.
The ones with just line in and line out and with a triac as the control element, rather than a relay, can be a problem with some loads.
The ones with just line in and line out and with a triac as the control element, rather than a relay, can be a problem with some loads.
- posted 14 years ago
If they cheaped out and used an SCR I can see the problem but even
then I doubt an electronic ballast would even notice. You might get
some flicker in the light since it would only be seeing a half wave. A
Triac in saturation should just be "on". I have all sorts of stuff
running on SSRs (PCs, TVs, audio amps) and IBM did it all the time.
(where I got the SSRs)
- posted 14 years ago
I have seen a discussion about this that said if you are using a
parisitic switch module (no neutral connection) you might not get
enough current through a CFL when off to power the circuit.
- posted 14 years ago
I have a line voltage humidistat from Honeywell. It surface mounts on a
wall box - air needs to get at the sensor.
- posted 14 years ago
It isn't the ballast that notices. It's the triac. The designer* relies
on a minimum load current after the triac has been triggered, to hold
the thing on until the next voltage zero crossing point. Loads like
fluorescents often don't satisfy that design criteria.
*Who is working to a requirement. Tell him that a minimum load current cannot be guaranteed and he will keep sending firing pulses to the triac, so that, even if it tried to drop out, it would almost immediately be re-triggered. But this does add (a little) to the cost.
It isn't so much that some designers cheap out and use an SCR, it is that they cheap out and don't send a train of trigger pulses to the triac, but just one.
*Who is working to a requirement. Tell him that a minimum load current cannot be guaranteed and he will keep sending firing pulses to the triac, so that, even if it tried to drop out, it would almost immediately be re-triggered. But this does add (a little) to the cost.
It isn't so much that some designers cheap out and use an SCR, it is that they cheap out and don't send a train of trigger pulses to the triac, but just one.
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