Infrared Motion Detector
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 Infrared PIR Sensor Alarm Infrare Motion Detector Range 12m DC9V 16V New Homeuse $2.25 (3 Bids) Time Remaining: 1h 1m |
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 Auto On Off Infrared Occupancy Motion Sensor Switch HOSS W Motion Detector $12.50 Time Remaining: 14d 13m Buy It Now for only: $12.50 |
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 Motion Sensor Detector Alarm Wireless IR Infrared Remote Home Security System $10.99 Time Remaining: 29d 18h 40m Buy It Now for only: $10.99 |
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 10 Auto On Off Infrared Occupancy Motion Sensor Switches HOSS W Motion Detector $84.00 Time Remaining: 23h 32m |
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 Wireless Motion PIR Infrared Sensor Detector For My 99 Zones Alarm System 315MHz $8.38 Time Remaining: 13d 10h 7m Buy It Now for only: $8.38 |
 315MHz WIRELESS PIR MOTION DETECTOR PASSIVE INFRARED SENSOR FOR GSM ALARM SYSTEM $7.80 Time Remaining: 7d 19h 51m Buy It Now for only: $7.80 |
 New Wireless Infrared PIR Home Security Motion Sensor Detector Alarm $0.99 Time Remaining: 2d 4m Buy It Now for only: $2.99 |
 Infrared Motion Detector wireless Passive Infrared Connect Security Alarm System $5.68 Time Remaining: 24d 1h 57m Buy It Now for only: $5.68 |
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 New PIR 6 LED AAA Battery Light Lamp Adjustment Infrared Sensor Motion Detector $0.01 Time Remaining: 2d 5h 45m |
 Infrared Microwave Digital Motion Detector Sensor White $19.82 Time Remaining: 29d 1h 3m Buy It Now for only: $19.82 |
 DC 12V Universal Power ON OFF Motion Detector Sensor Switch Infrared 12 Volt DIY $10.96 Time Remaining: 26d 11h 7m Buy It Now for only: $10.96 |
 Ademco 4275 passive infrared motion detector serial RPM $0.01 Time Remaining: 2d 9h 14m |
 315MHz Wireless Motion PIR Infrared Sensor Detector For My 99 Zones Home Alarm $7.59 Time Remaining: 3d 4h 8m Buy It Now for only: $7.59 |
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 Infrared IR Motion Detector Wireless Passive Connect Home Security Alarm System $5.68 Time Remaining: 13d 6h 24m Buy It Now for only: $5.68 |
 Motion Activated 6 LED Adjustment Light Lamp Motion Detector Infrared PIR Sensor $0.01 Time Remaining: 2d 16h 49m |
 Wireless Infrared 8 LED Light Lamp PIR Auto Sensor Motion Detector AA Battery $8.99 Time Remaining: 15d 5h 52m Buy It Now for only: $8.99 |
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 2GIG Technologies 2GIG PIR1 345 Passive Infrared Motion Detector New $10.02 (5 Bids) Time Remaining: 2d 19h 49m |
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 10 Pack Optex Pet Immunity Passive Infrared Motion detector RX 40PI NEW $29.99 Time Remaining: 3d 18h 57m |
 Infrared PIR Sensor Alarm Infrare Motion Detector LS 818 1 $9.99 Time Remaining: 20d 8h 51m Buy It Now for only: $9.99 |
 15LED Super Bright PIR Infrared Auto Sensor Motion Detector Wireless Light White $5.99 Time Remaining: 14d 11h 37m Buy It Now for only: $5.99 |
 Ademco 4275 passive infrared motion detector serial RPM $0.01 Time Remaining: 4d 10h 5m |
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 Doberman Infrared Perimeter Protector Alarm Motion Detector SE 0305OR $28.35 Time Remaining: 27d 2h 18m Buy It Now for only: $28.35 |
 10 Pcs Wireless PIR Infrared Motion Detector 315MHz for Home Alarm System $79.99 Time Remaining: 24d 17h 36m Buy It Now for only: $79.99 |
 HONEYWELL 5800PIR RES WIRELESS PASSIVE INFRARED MOTION SENSOR DETECTOR ADEMCO $25.99 (5 Bids) Time Remaining: 5d 1h |
 Doberman Infrared Perimeter Protector Alarm Motion Detector SE 0305OR $24.49 Time Remaining: 26d 17h 51m Buy It Now for only: $24.49 |
 New Ceiling Mount Passive Infrared Detector Motion Detector Alarm Home Security $9.99 Time Remaining: 17d 11h 20m Buy It Now for only: $9.99 |
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 4Pcs 315MHz Wireless PIR Infrared Motion Sensor Detector for Home Alarm System $33.99 Time Remaining: 25d 7h 23m Buy It Now for only: $33.99 |
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 2GIG Technologies 2GIG PIR1 345 Passive Infrared Motion Detector New $0.99 (1 Bid) Time Remaining: 5d 19h 46m |
 Infrared PIR Sensor Alarm Infrare Motion Detector Range 12m DC9V 16V New Homeuse $9.99 Time Remaining: 24d 16h 23m Buy It Now for only: $9.99 |
 Infrared PIR Auto Sensor 6 LED Light Lamp Motion Detector Energy Saving New $7.47 Time Remaining: 29d 11h 35m Buy It Now for only: $7.47 |
 TAD K218D 185 250V PIR Sensor Switch Infrared Sensor Switch Motion Detector $11.88 Time Remaining: 16d 7h 12m Buy It Now for only: $11.88 |
 New DC12V Infrared PIR Sensor Alarm Infrare Motion Detector Detecting 12m 818 1 $0.99 (1 Bid) Time Remaining: 6d 17m |
 DC 9 16V PIR Infrared Sensor Alarm Motion Detector Wht $13.72 Time Remaining: 27d 2h 3m Buy It Now for only: $13.72 |
 Mini Alert Alarm Motion Detector PIR Infrared Alarm Room Protection $17.50 Time Remaining: 28d 23h 13m Buy It Now for only: $17.50 |
 Honeywell CK DT720 dual tec motion detector microwave and pir infra red $14.75 Time Remaining: 6d 2h 17m |
 Doberman Infrared Home Defender Motion Detector NEW $23.99 Time Remaining: 2d 1h 44m Buy It Now for only: $23.99 |
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 Honeywell CK DT720 dual tec motion detector microwave and pir infra red $14.75 Time Remaining: 6d 2h 33m |
 60m Double Beams Active Infrared Motion Detector Black $39.06 Time Remaining: 16d 5h 18m Buy It Now for only: $39.06 |
 Infrared PIR Sensor Alarm Infrare Motion Detector DC9V 16V Optional LED ON OFF $9.99 Time Remaining: 25d 9h 5m Buy It Now for only: $9.99 |
 Honeywell CK DT720 dual tec motion detector microwave and pir infra red $14.75 Time Remaining: 6d 2h 36m |
 Wireless Autodial Remote 99zone Security Alarm System Infrared Motion Detector $58.59 Time Remaining: 1d 9h 31m Buy It Now for only: $58.59 |
 Wireless Motion PIR Infrared Sensor Detector For My 99 Zones Home Alarm 315MHz $5.87 Time Remaining: 14d 8h 2m Buy It Now for only: $5.87 |
 Wireless PIR Infrared Motion Sensor Detector 315MHz for Home Alarm System $8.99 Time Remaining: 23d 12h 1m Buy It Now for only: $8.99 |
 5800 PIR WIRELESS PASSIVE MOTION DETECTOR INFRARED $40.00 Time Remaining: 6d 20h 41m |
 315MHz Wireless PIR Infrared Motion Sensor Detector for Home Alarm System $8.99 Time Remaining: 21d 16h 31m Buy It Now for only: $8.99 |
 2Pcs Aluminum Alloy PIR Infrared Motion Detector Wireless Sensor LED Light Lamp $23.89 Time Remaining: 10d 14h 4m Buy It Now for only: $23.89 |
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Security Alarm System Passive Infrared Motion Detectors
Motion detectors are a very important part of a home or business alarm security system. Among motion detectors there are several different types available and one of the most common are the Passive Infrared Motion Detectors.
Passive Infrared Motion Detectors or PIR detectors use "passive infrared" technology. The device is mounted on a wall or somewhere in the corner of a room. continues to It sends invisible beams out into the covered area in the form of layers. The top most layer goes the furthest and averages almost 60 feet straight ahead and 35 feet on the sides.
The center layer of beams spreads the area around mid way and the bottom layer sweeps the room nearest to the detector. These beams independanty measure the infrared temperature of anythind on which they land on and continuously look for a clash of temperature against that point.
For example if a beam lands on your table and knows what temperature it is, when anything else or a person comes in front of the couch its temperature is different and causes a violation so the alarm is triggered. These motion detectors are very hard to compromise.
Passive motion detectors have a microchip in them that will adjust the device for slow and methodical temperature changes. This way as your room warms up and cools down during an armed alarm period, you will not get a false alarm.
Some motion detectors are designed to be mounted in the ceiling and spread a 360-degree cone downward. Some are recessed to replicate an electric outlet and various other combinations are available for the James Bond like clients. Most often the device is an aesthetically pleasing small device that is mounted 5-7 feet high in the corner of a room.
But obviously these motion detectors cannot protect every inch of your home or business unless you use many of them to cover all the area. So you should place them carefully and intelligently to secure the sensitive area.
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