Can PIR range be adjusted?

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yartin

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Hi
I need to fit an LED flood light with PIR similar to thee one in photo below. The PIR sensor range is 120 degrees angle and 10m. I only want to sense motion up to 5m. The light doesn't have sensitivity control. Is there any other way to reduce PIR range to 5m?

Would a black electrical tape to mask partially sensor top area work?

Thanks
 

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Separate PIRs often have adjustment facilities.

A cheap junk PIR integrated into an even cheaper LED light will not.
 
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Do try pvc tape.
A neighbour loved my 500W PIR a bit too much so I covered part of the sensor with black tape then white so it doesn't look covered.

I found I can restrict the range by pointing them down but if yours is fixed then try a bit of white tape, to fuzzy the signal a bit. They work with a multiple-faceted lensed cover thing, so when someone approaches , focused spots of IR flicker across the sensor. It notices changes. So if you diffuse it a bit with white tape, or attenuate part of it with black, I reckon it'll be less sensitive. Leave the lower part uncovered so it still responds well close up.
 
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Justin Passing said:
Do try pvc tape.
A neighbour loved my 500W PIR a bit too much so I covered part of the sensor with black tape then white so it doesn't look covered.

I found I can restrict the range by pointing them down but if yours is fixed then try a bit of white tape, to fuzzy the signal a bit. They work with a multiple-faceted lensed cover thing, so when someone approaches , focused spots of IR flicker across the sensor. It notices changes. So if you diffuse it a bit with white tape, or attenuate part of it with black, I reckon it'll be less sensitive. Leave the lower part uncovered so it still responds well close up.
Click to expand...
I will try the tape method.

For the same reason of neighbours and too much light, I will buy 10W Led which is like 100W and 800 Lumes, more than enough. I may even tape the led light for less illumination, they don't do less than 10W LED floodlight.
 
flameport said:
Can't find what?
That PIR has a range of either 12 or 5 meters depending on which of the supplied lenses is installed.
Click to expand...
Yes I will buy your £70 PIR put in the front of the house and another £20 for the flood light at the back garden LOL

When I can get a decent 10W flood light with built in PIR and use masking tape and do the job for £20.
 
yartin said:
When I can get a decent 10W flood light with built in PIR and use masking tape and do the job for £20.
Click to expand...
sorry, but probably the twelfth of never. There are two types of these products.

The ones like you have bought. They are made to the lowest price and have little flexibility. Stack 'em high and sell them cheap....
Or
Proper products that provide all sorts of customisation, over-ride, twilight detection, light output and range adjustment , and much more. These products do, naturally, carry a price to reflect the functionality.
 
Taylortwocities said:
sorry, but probably the twelfth of never. There are two types of these products.

The ones like you have bought. They are made to the lowest price and have little flexibility. Stack 'em high and sell them cheap....
Or
Proper products that provide all sorts of customisation, over-ride, twilight detection, light output and range adjustment , and much more. These products do, naturally, carry a price to reflect the functionality.
Click to expand...
I haven't bought any product, I am still looking, don't assume, not good to assume without knowing facts.

I am looking for a 10W flood light with adjustable built in PIR motion sensor. If you can find one, send me the link
Or
forget it.
 
This is it:

Security Lighting Pir Floodlights | CEF

Install security in your home or business with our Security Lights PIR Floodlights – order yours now from the CEF lighting luminaires range.
www.cef.co.uk

You can adjust: ambient Lux, Sensitivity distance, Time, Brightness 3000k/4000k/5000k and Dimmable And with remote control. It does the lot.
 
I quite like these floodlights https://cpc.farnell.com/ledvance/4058075810938/floodlight-led-10w-3000k-wt-ip65/dp/LA06689 I prefer the warm white rather than daylight, too. Mount em high enough and you can tilt them down to restrict the beam overspill onto a road or neighbour's property.

A separate PIR is a must as the luminaire-attached ones restrict the ability to tilt the luminaire down (and still allow the PIR to see the movement area to be illuminated) and they then just throw light where it is not wanted (or needed. Some of the better separate PIRs have use/installer instructions on how to mask the lens, when required.

Many floodlight luminaires only come with a short cable length so a waterproof termination box is needed that some separate PIRs will, effectively, double up as.
 
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