AJAX Dual Curtain Beam Outdoor, Black and White

The AJAX Dual Curtain Beam Outdoor is an outdoor perimeter detector from the AJAX alarm range. It is built to watch a boundary line and raise an alarm when someone crosses it. Outdoor sensors like this one are usually placed at the outer edge of a property, so that an intruder is noticed before reaching the building itself.
How the dual curtain beam works
The sensor uses two infrared beams that run in parallel and are placed at different heights. Together they form a curtain-like detection zone between the transmitter and the receiver. An alarm is raised when the beams are interrupted in the right sequence, which is typical of a person walking through the zone. Using two beams instead of one is meant to make the detection more reliable and to reduce false alarms caused by small animals, falling leaves or passing objects that only affect one beam.
Key features
- Outdoor dual curtain beam detector for perimeter protection
- Two beams working together to form a detection curtain
- Black and white colour version to suit different surroundings
- Part of the AJAX wireless alarm system range
- Can be monitored together with other AJAX sensors, keypads and alarm components
Specifications
- Product type: dual curtain beam detector
- Use: outdoor perimeter and boundary protection
- Colour: black and white (B&W)
- Brand: AJAX
- Article number: A-DUALOUTDOORCURTAIN (B&W)
Detailed technical figures such as range, beam height, power source and operating temperature are not listed in the catalogue description. Please refer to the manufacturer documentation before installation.
Typical uses
The detector suits a range of outdoor sites where a clear boundary needs watching. Common applications include:
- Garden and yard perimeters around houses
- Fence lines and walls around commercial premises
- Driveways, gates and access routes
- Car parks, storage areas and industrial yards
- Outbuildings, sheds and secondary structures
Installation considerations
Outdoor beam detectors work best when the beams have a clear, unobstructed path. Plants, branches, puddles, uneven ground and strong reflective surfaces can affect performance, so the sensor should be aligned carefully and tested after installation. Mounting posts and the pair of units should be fixed firmly so that vibration or wind does not move the beams out of line. Consider where sunlight and shadows will fall during the day, and where the zone will sit relative to pathways and gates.
Integration with an AJAX system
As part of the AJAX wireless range, the detector is intended to work with an AJAX hub and other AJAX devices. This allows the outdoor sensor to be included in the same system as indoor detectors, keypads and panic buttons, so that alarms and status information can be managed from one place. Confirm the compatibility with your existing hub and accessories before purchase.
Ordering notes
This listing is for the black and white version of the product. If a different colour is needed, check the separate article numbers in the catalogue. Stock levels and delivery times are not shown here, so please confirm availability with the shop before placing an order.







