Intruder Alarms

PIR & Motion Sensors

221 products · Brand new, from leading brands

PIR motion sensors and detectors for intruder alarm systems, from Grade 2 PIRs to Grade 3 anti-masking dual tech detectors, external detectors and perimeter beams. Wired and wireless models from Texecom, Pyronix, GJD, Takex and more.

PIR & Motion Sensors

221 products

Showing 1 - 48 of 221 products

Showing 1 - 48 of 221 products
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Texecom Premier Compact IR PIR Detector Grade 2
Texecom Capture PET
Texecom Capture Q20 20m Quad PIR White Grade 2
Texecom Capture P15 15m PIR White G2
Pyronix FPMEQBL 12M Dual Element Pyro-Electric PIR Detector, Blue
Ajax 121295.09.WH1 MotionProtect U Jeweller, Wireless IR Motion Detector, WhiteAjax 121295.09.WH1 MotionProtect U Jeweller, Wireless IR Motion Detector, White
Ajax Systems Ajax 121295.09.WH1 MotionProtect U Jeweller, Wireless IR Motion Detector, White
Sale price£47.70
Pre-Order (Not in Stock) - Estimated Lead Time: 2-6 Weeks.
Pyronix 15m Quad PIR Detector
Eaton PIR Motion Detector Wired 15m Range
Texecom Premier External TD Black Grade 2
Texecom Premier External TD White Grade 2m
Texecom Texecom Premier External TD White Grade 2m
Sale price£74.55
Pre-Order (Not in Stock) - Estimated Lead Time: 2-6 Weeks.
Ajax Superior MotionCam (PhOD) Jeweller (8EU) ASP - JEM Systems UK
Ajax DualCurtain Outdoor (8EU) ASP - JEM Systems UK
Ajax Systems Ajax DualCurtain Outdoor (8EU) ASP
Sale price£127.20
Pre-Order (Not in Stock) - Estimated Lead Time: 2-6 Weeks.
Ajax MotionCam Outdoor (PhOD) Jeweller (8EU) ASP - JEM Systems UK
Ajax MotionCam U PhOD Jeweller 8EU ASP - JEM Systems UK
Ajax Systems Ajax MotionCam U PhOD Jeweller 8EU ASP
Sale price£109.80
Pre-Order (Not in Stock) - Estimated Lead Time: 2-6 Weeks.
Ajax MotionCam Outdoor HighMount (PhOD) Jeweller (8PD) - JEM Systems UK
Ajax CurtainCam Outdoor HighMount (PhOD) Jeweller (8EU) ASP - JEM Systems UK
Ajax Systems Ajax CurtainCam Outdoor HighMount (PhOD) Jeweller (8EU) ASP
Sale price£233.65
Pre-Order (Not in Stock) - Estimated Lead Time: 2-6 Weeks.
Ajax Curtain Outdoor Mini (8EU) ASP - JEM Systems UK
Ajax MotionCam Outdoor (8EU) ASP - JEM Systems UK
Pyronix FPKX15DT3 10.587GHz 15M Dual Technology Detector
Pyronix FPKX10DP Digi 10M PIR Detector, 24kg Pet Immunity
Optex SL-650QN External Beam 200m Quad
Optex Optex SL-650QN External Beam 200m Quad
Sale price£232.00
In stock
Optex SX-360Z Passive Infrared Sensor Ceiling Sx-360zOptex SX-360Z Passive Infrared Sensor Ceiling Sx-360z
Optex FLX-P-ST FlipX Indoor PIR Detector with 180° Rotatable Lens
Optex AX-70TN AX Series Outdoor IR Beam, 1-Channel
Optex SL-350QN External Beam 100m Quad
Optex Optex SL-350QN External Beam 100m Quad
Sale price£215.40
In stock

About PIR & Motion Sensors

PIR motion sensors and detectors for intruder alarm systems, from Grade 2 PIRs to Grade 3 anti-masking dual tech detectors, external detectors and perimeter beams. Wired and wireless models from Texecom, Pyronix, GJD, Takex and more.

PIR sensors and motion detectors we stock

Pair detectors with intruder alarm panels and kits and door contacts and sensors.

How to choose a PIR detector

  • Grade: match the system grade; Grade 3 systems need anti-masking detectors.
  • Technology: quad PIRs improve false-alarm immunity, while dual tech suits areas with draughts or temperature changes.
  • Coverage: choose wide-angle, curtain, long-range corridor or 360° ceiling patterns to suit the room.
  • Wired or wireless: wireless detectors must match the panel's radio system, such as Texecom Ricochet, Pyronix Enforcer or Hikvision AX PRO.

Why buy from JEM Systems UK

JEM Systems UK supplies genuine Texecom, Pyronix, GJD and Takex detectors, all brand new and factory sealed, to trade installers across the UK. Buy online with fast, tracked UK delivery.

PIR sensor FAQs

What does PIR stand for?

Passive infrared. A PIR detects the change in infrared energy when a warm body moves across its detection zones. It is passive because it emits nothing itself.

What is the difference between a PIR and a dual tech detector?

A dual tech detector combines a PIR with a microwave sensor and normally signals an alarm only when both detect movement, which reduces false alarms in difficult environments.

Will pets set off a PIR sensor?

A standard PIR can be triggered by pets. Pet-tolerant detectors are designed to ignore animals up to a stated size or weight when installed as the manufacturer instructs.

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