14 votes
Accepted

What are the pros and cons on installing a typical garage floodlight kit, inside your garage?

The immediate issue I see is that a floodlight is not great for lighting a room. They cast harsh shadows, create a lot of glare if you look anywhere near their direction, and will leave plenty of ...
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  • 26.6k
10 votes

What are the pros and cons on installing a typical garage floodlight kit, inside your garage?

Due to medical conditions I need lots of light and I don't due well with harsh direct lighting or shadows. For lots of light, I have often installed alternate 'outdoor' lighting inside. I even have a ...
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  • 5,551
5 votes

Why aren't my PIR security lights working through my window?

Passive infrared sensors (PIR), use Infrared (IR) light to detect motion. Unfortunately for you, infrared light does not travel through glass so well.
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  • 128k
5 votes

Help wiring occupancy sensor

You used the wrong clamp, so the grounding path is broken The particular occupancy sensor you are using uses the rather ugly kludge of sending its operating current back "home" via the equipment ...
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5 votes

Lightswitch - Ground too short

TLDR: Leave the ground wires where they are! Let the switch pick up ground via its mounting screws. Don't fall for "Spare wire syndrome" Often, novices see a spliced group of, say, white ...
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5 votes

Can I stop tenants from leaving their small, 1,500 electric oil-filled radiators ON while they are gone using an 'occupant sensor' control recepticle?

This is a legal mess First, you really, really need to review landlord-tenant law. Because your strategy is penny-wise/pound-foolish. You are presuming a right to do things that are totally illegal, ...
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4 votes

How can I install a motion sensor for a closet light?

You didn't say if you already had lighting in your closet or not. If you don't, I would suggest buying a stick-up (battery-operated) LED light with a motion sensor. (In my area, most retailers have ...
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  • 1,084
4 votes
Accepted

How do I replace or repair a motion sensor PIR lens?

The item you are looking for is a PIR lens. These are typically sold in bulk, but now that you know the name of it, you should be able to google for one to purchase. An example one is here
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  • 715
4 votes
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Reusing ADT motion sensors

First we must determine whether your motion sensors are wired or wireless. Wired The wired PIR motion sensors used in security systems since roughly forever are pretty simple devices. You feed them ...
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  • 19.6k
4 votes

Motion detector switch affected by heater?

Absolutely! Most motion sensors are IR (infrared) detectors and they can "see" heated air as it moves. If it moves fast enough it may trick the sensor into thinking that it's a human vs. just heated ...
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  • 20.4k
4 votes
Accepted

Occupancy sensor to turn off socket

You could combine a standard Occupancy Sensor: with a Relay: The Occ Sensor controls the relay, and you use the relay's Normally-Closed terminal to power your Outlet, something like this: So when ...
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  • 5,074
3 votes

How does a 3-way motion sensor switch interact with the mechanical switch on the circuit?

To make a true 3-way motion detector switch -- as opposed to a motion detector with a remote, or a motion detector in series with a normal switch -- the motion detector has to be able to monitor ...
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  • 16k
3 votes

Do I need to leave the light switch turned on all the time for a motion sensor to work?

Unless the sensor/light is connected directly to power, the switch will always have to be in the ON position for the light to come on. The switch is installed to interrupt the ungrounded (hot) ...
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  • 128k
3 votes

Is there a 3-way occupancy switch with one sensor being external?

There are more choices than you might think http://www.leviton.com/OA_HTML/SectionDisplay.jsp?section=38557&minisite=10251 I am thinking you might want a 3-way, manual on, auto off. But ...
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  • 2,177
3 votes

How to find a motion sensing light switch that turns lights on AND off when motion is detected?

I have a similar situation in my restroom. My sensor is in the room and the time constant is 1 minute only. Each pulse of the motion sensor will reset the 1-minute timer, so after the door is closed ...
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  • 256
3 votes

How to find a motion sensing light switch that turns lights on AND off when motion is detected?

Put the sensor in the space you are trying to light, and suddenly this "common need" becomes "not a need at all" which is why you can't find them, since that's how it's done, when done conventionally. ...
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  • 134k
3 votes

How do I rewire LED security light to bypass motion detector - without burning out solid state board

I've done this. I have a great solution. Simply take the hot circuit to the sensor and to the light switch and run them in parallel. The only downfall is that you won't be able to turn the ...
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  • 1,230
3 votes

Motion sensor activates for no apparent reason

These units also detect heat changes. Make sure the HVAC vent isn't blowing warm or cool air onto the detector or into its view of the space.
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3 votes

Wireless Networked Sensor Light?

Yes, there are. Some speak the X10 carrier-current signalling protocol, some use more modern communications. Obviously you would need to buy compatible components. A good home-automation catalog or ...
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  • 16k
3 votes
Accepted

lutron sensor switch - wiring help

Unfortunately, the Installation Guide doesn't say much. It shows the two black wires but does not have any indication as far as which one goes to hot vs. switched-hot. The implication is "it ...
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3 votes
Accepted

Help wiring occupancy sensor

Yeah. That old clamp wasn't perfect (one NM in a 3-AC clamp), but what you did there with the new clamp was a complete hork job. That clamp is made for 1 NM cable. You just spammed your 3 cables in ...
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3 votes

What are the pros and cons on installing a typical garage floodlight kit, inside your garage?

I have one in the garage. It is great because when you walk into the garage a light comes on and you don't have to hunt for a switch. If you are just carrying laundry down or getting into the car it ...
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3 votes

Occupancy sensor to turn off socket

i used the following to make an "inverter" out of aftermarket code-friendly devices when i was renting and couldn't mod anything permanent: a cheap always-on LED nitelight and a screw-in ...
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  • 1,800
3 votes

Why are the switches connected and each one has two black wires going to one terminal?

Switches need a connection to the always powered part of the circuit on one side of the switch and then the connection to the load (light or outlet or fan) of the other side. Often the live powered ...
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  • 61.3k
2 votes

How do I rewire LED security light to bypass motion detector - without burning out solid state board

All motion detectors have an override mode. Typically this is done by either flipping the wall switch off/on in a certain pattern, or by a switch on the motion head. Thing is, when you put it in ...
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2 votes

How can I improve the sensitivity of a motion detector light?

Removing the white plastic that covers the light sensor will make the PIR/motion sensor less sensitive/effective. The cover is actually a Fresnel lens, it has a pattern that scatters light in ...
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2 votes

Can I use low voltage lights with a motion sensor?

The motion sensor needs to be hot 24x7. Motion sensors actually calibrate for the environment, and if you constantly sever power to them, they constantly are reset and have to start calibrating all ...
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2 votes

How to shape the zone a radar motion sensor detects?

I know that that's an old thread but you can use the anti-static bag used in electronic: works like a charm for me. Regards
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2 votes

Why aren't my PIR security lights working through my window?

This tree, not the one you should be barking up, is. PIRs do NOT work though glass. Put it outside.
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  • 134k
2 votes
Accepted

Garage Sensors Work Separately but Not Together?

The blinking red light on the sender would indicate that they are mis-aligned. The best way to test this is to remove them from the mounting brackets and hold them a couple of inches apart with the ...
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  • 6,825

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