PIR Sensors

PIR (passive infrared) sensors measure infrared (IR) light radiating from moving objects that emit heat. The sensor allows you to detect motion of people, animals and cars to trigger security alarms and lighting. They are often used in PIR-based motion detectors. PIR sensors are passive due to the fact that no heat or energy is emitted by the sensor and they detect the emission of infrared radiation and not heat.

Where are PIR sensors used?

These sensors are used to detect movement and are ideal for security and safety such as burglar alarms and security lighting systems. They can also be called PID passive infrared detectors (PID). They can be used internally & externally and can be mounted to ceilings & walls. PIR sensors have various ranges and styles including pet friendly options (designed to ignore certain shapes of moving objects, or only detect motion above a certain height). PIR sensors are used for applications such as automatically turning on lights when a person enters a room or causing a video camera to start recording.

How does a PIR sensor work?

All objects emit some level of radiation (not visible to the human eye) and the hotter something is, the more radiation is emitted. The sensor detects levels of infrared radiation impinging upon it which varies depending on the temperature of the objects in front of the sensor. When a warm object (person or animal) walks in front, the temperature in the sensor’s field of view will increase from room to body temperature. The sensor converts this change in the incoming infrared radiation into a change in the output voltage and this triggers the detection.

How are PIR sensors installed?

They are quick and easy to fit using the screws and plugs that are supplied to mount an adjustable bracket onto the wall or ceiling. They come in varying ranges, once you know the range of the sensor and how far it can detect you can therefore plan your security coverage. Areas recommended include corners, hallways, patios, driveways, front and back entries. Ideal position being 2 to 3 metres above the ground.

Motion sensors are also used in the work place for example to shut down equipment that could be dangerous if the worker gets too close.

These sensors should not be installed:

  • Directly above a radiator (change in infrared heat could trigger the alarm)
  • Directly looking into a window (sunlight can cause confusion for the sensor)
  • In rooms where a number of animals are present
  • Near air vents (temperature change might trigger the alarm)

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Description Prix Detector Type Sensor Radius Battery Diameter Depth Width Height Series Tamper Resistant Additional Features
N° de stock RS 791-8260
MarqueRS PRO
12,22 €
Each
Unité
- - - - - - - - - -
N° de stock RS 777-7741
Référence fabricant6800-0-2534 6847 AGM-35-500
MarqueABB
131,18 €
Each
Unité
- - - - - 125 mm 115mm - - -
N° de stock RS 519-400
Référence fabricantLS1020
MarqueABUS
39,62 €
1 Set
jeu(x)
IR Detector 20m - - 34 mm 46mm 95 mm Ecoline Yes -
N° de stock RS 519-484
Référence fabricantLS2030
MarqueABUS
79,33 €
1 Set
jeu(x)
IR Detector 30 m, 60 m - - 72 mm 173mm 74 mm Profiline Yes -
N° de stock RS 796-2034
MarqueRS PRO
85,75 €
Each
Unité
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N° de stock RS 796-2019
MarqueRS PRO
68,31 €
Each
Unité
- - - - - - - - - -
N° de stock RS 740-4446
Référence fabricant6800-0-2519 6818 U-500
MarqueABB
133,12 €
Each
Unité
PIR Motion Detector 24m - - 110 mm 110mm 70 mm BasicLine Corridor - Brightness Independent Test Mode, Detect 2.5 m Height, For Switching Lighting System
N° de stock RS 796-2047
MarqueRS PRO
89,45 €
Each
Unité
- - - - - - - - - -
N° de stock RS 777-7732
Référence fabricant6800-0-2532 6847 AGM-204-500
MarqueABB
126,92 €
Each
Unité
- - - - - 125 mm 115mm - - -
N° de stock RS 851-2790
Référence fabricantSensIQ S Evo BLK
MarqueSteinel
158,73 €
Each
Unité
- - - - - - - - - -
N° de stock RS 796-2059
MarqueRS PRO
126,99 €
Each
Unité
- - - - - - - - - -
N° de stock RS 705-5486
Référence fabricant0 697 40
MarqueLegrand
124,41 €
Each
Unité
- - - - - - - - - -
N° de stock RS 327-7326
Référence fabricantAMN11112
MarquePanasonic
33,10 €
Each
Unité
PIR Motion Detector 5m - 11mm - - 14.5 mm NaPiOn - -
N° de stock RS 169-3888
Référence fabricantPPGI0601
MarqueMurata
1,849 €
Each (In a Box of 100)
Unité
IR Detector - - 21mm - - 6.4 mm - - -
N° de stock RS 721-4938
Référence fabricantPPGI0601
MarqueMurata
3,85 €
Each
Unité
IR Detector - - 21mm - - 6.4 mm - - -
N° de stock RS 327-7310
Référence fabricantAMN11111
MarquePanasonic
26,59 €
Each
Unité
PIR Motion Detector 5m - 11mm - - 14.5 mm NaPiOn - -
N° de stock RS 777-7750
Référence fabricant6800-0-2564 6868-35-500
MarqueABB
17,96 €
Each
Unité
- - - - - - - - - -
N° de stock RS 796-2009
MarqueRS PRO
39,93 €
Each
Unité
- - - - - - - - - -
N° de stock RS 700-9271
MarqueRS PRO
70,67 €
Each
Unité
- - - - - - - - - -
N° de stock RS 796-2015
MarqueRS PRO
49,60 €
Each
Unité
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