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AJAX Curtain Beam PIR Sensor for Indoor Use, Black & White (A-PIRANTIMASK(B&W))
A-PIRANTIMASK(B&W)

AJAX Curtain Beam PIR Sensor for Indoor Use, Black & White (A-PIRANTIMASK(B&W))

AJAX Curtain Beam PIR Sensor, Indoor, Black and White

The AJAX Curtain Beam PIR Indoor is a passive infrared motion sensor designed for indoor security. It is part of the AJAX wireless alarm system family and is supplied in a black and white colour version to suit different interiors.

Rather than covering a wide open area, a curtain beam sensor creates a narrow, vertical detection zone that resembles a curtain of infrared light. This makes it a practical choice for guarding a specific passage, such as a doorway, a corridor, a window line or the entrance to a room, where you want to know when someone crosses a set line.

As a PIR (passive infrared) device, it reacts to changes in infrared heat patterns caused by a moving body. It does not emit a signal of its own to detect people, which keeps it simple to use in a home or office environment alongside the other AJAX components.

The sensor is intended for indoor use. Its black and white finish allows it to blend into dark or light walls and trims. Installation and placement should follow the manufacturer’s instructions to get the best coverage for your layout.

Typical uses include protecting stairways, storage rooms, shop floors, offices and areas behind doors or windows. It works well as one part of a wider AJAX system, where several sensors and a central hub together give a more complete picture of activity in a building.

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AJAX Curtain Beam PIR Indoor Sensor, Black and White

AJAX Curtain Beam PIR Sensor for Indoor Use, Black & White (A-PIRANTIMASK(B&W))

The AJAX Curtain Beam PIR Indoor is a motion detector built for indoor security. It belongs to the AJAX range of wireless alarm components and is offered in a black and white version, so you can choose the finish that best matches your walls, door frames and décor.

Unlike a standard motion sensor that watches a wide room, a curtain beam detector concentrates its sensing into a narrow, vertical zone. This curtain-like barrier of detection is ideal when you need to watch a specific opening or path rather than an entire space. It helps you cover a doorway, a hallway opening, a window run or a narrow corridor with a single device.

How it works

The sensor uses passive infrared (PIR) technology. It monitors the infrared heat signatures in its field of view and reacts when a warm moving body, such as a person, crosses the detection curtain. Because PIR sensing is passive, the device does not need to transmit a signal to detect activity, and it is generally unaffected by ordinary light changes in the room.

Key features

  • Curtain beam PIR detection for narrow, vertical coverage
  • Designed for indoor use only
  • Black and white colour version
  • Part of the AJAX wireless alarm system
  • Passive infrared sensing based on body heat and movement
  • Suitable for use alongside other AJAX hubs, keypads and sensors

Specifications

  • Article number: A-PIRANTIMASK(B&W)
  • Type: Curtain beam PIR motion sensor
  • Installation: Indoor
  • Colour: Black and white
  • Brand: AJAX

For exact detection range, mounting height, power requirements and compatibility details, please refer to the manufacturer’s documentation supplied with the product.

Typical uses

Because of its narrow detection zone, this sensor suits many indoor situations where a broad motion detector would be less precise. Common applications include:

  • Guarding a doorway or corridor entrance
  • Monitoring a window line or wall opening
  • Protecting stairways and passages between rooms
  • Covering storage rooms, back offices and stock areas
  • Supplementing other detectors in a shop or office layout

Placement and installation

Placement is important for any motion sensor. Aim the curtain beam across the path you want to monitor, so that a person has to cross the detection line to pass through. Avoid pointing the sensor directly at heat sources such as radiators, heaters or sunlit windows, as these can cause unnecessary triggers. Keep the device away from large moving objects, such as curtains or plants, where possible. Follow the manufacturer’s guidance for mounting height and angle.

Integration with an alarm system

The sensor is designed to be one element of a wider AJAX alarm installation. Combining it with other AJAX detectors, a keypad for arming and disarming, and a central hub gives you a flexible way to monitor your premises. You can add or move devices as your security needs change over time.

Who it is for

This product suits homeowners, small business owners and facility managers who want a discreet, indoor-only sensor for specific openings. Its black and white finish makes it easy to fit into a range of interiors without drawing attention.

If you are unsure whether this sensor is the right choice for your layout, consider the size and shape of the area you need to cover, the number of entry points, and how the device will fit with your other AJAX components.

Additional information

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