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AJAX | DualCurtain Outdoor Jeweller Bidirectional Outdoor Curtain Detector, White | 42803

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SKU:
AJ-42803

A curtain detector that looks both ways. Four IR sensors form two independent narrow beams, each covering 13 to 49 feet, so one device mounted on a wall protects the line in both directions along it.

Built for the installer

That geometry is what makes it useful on a facade or a boundary. Mounted centrally on a wall it protects the full length in both directions with one enrollment and one battery set, where a conventional outdoor detector would need two units angled apart. Each side can be configured independently.

The 4.5 degree horizontal beam keeps detection tight to the building line, so a pavement or a neighbouring garden outside the beam does not generate activations. SmartDetect and ELSA handle the filtering, with anti-masking, IP54 and a -13F to 140F rating.

Key features

  • Two independent beams from one device, protecting a wall line in both directions
  • 4.5 degree horizontal beam keeps detection tight to the building and off the pavement
  • 13 to 49 ft per side, each side configurable independently
  • SmartDetect and ELSA filtering with anti-masking
  • IP54 and -13F to 140F for exposed facade mounting
  • Pet immunity by height to 2.62 ft, weight not a factor

System requirements

Requires an Ajax hub or range extender. Designed for outdoor use. Mount on a wall so the two beams run along the protected line.

Brand:
AJAX
Radio communication range:
Up to 5,570 ft in open space, between the device and a hub or range extender
Sensitive elements:
4 x IR sensor forming two independent curtains
Motion detection distance:
13 to 49 ft for each side
Viewing angles:
Horizontal 4.5 degrees, vertical 90 degrees
Detection speed:
1 to 6.6 ft/s
Near zone detection:
3 levels, adjustable in the Ajax app
Pet immunity:
Up to 2.62 ft height, weight irrelevant
Anti-masking:
Detects masking attempts
False alarm filtering:
SmartDetect and ELSA algorithms, temperature compensation -13F to 140F
Use environment:
Outdoor
Sabotage protection:
Tamper alarm on enclosure opening or removal from the mounting panel
Power input:
2 x CR123A, pre-installed
Battery life:
Up to 4 years
Dimensions:
6.85 x 4.84 x 3.46 in
Device weight:
21.7 oz
Operating temp:
-13F to 140F
Operating humidity:
Up to 95%
Protection class:
IP54
Colour:
White
Region:
9NA, North America model
Radio protocol:
Jeweller, two-way encrypted wireless
Frequency band (North America):
905.0-926.5 MHz, certified to UL/ULC standards
Radio modulation:
GFSK with frequency hopping
Encryption:
Block encryption with a dynamic key
Communication loss detection:
After 36 seconds
Anti-spoofing:
Device authentication
Warranty:
24 months
What does bidirectional mean in practice?
Four IR sensors form two independent narrow beams pointing in opposite directions. Mounted centrally on a wall, one device protects the line in both directions rather than needing two units.
Will it detect people on the pavement outside?
The horizontal beam is only 4.5 degrees wide, so detection stays tight to the wall line. Anything outside that narrow plane, such as a pavement or neighbouring garden, is not in the field.
Is it rated for full outdoor exposure?
It is IP54 and rated -13F to 140F with humidity to 95%. IP54 covers dust and splashing water, so mount it on a facade rather than somewhere subject to direct pressure washing.
Does this device need an Ajax hub?
Yes. All Jeweller devices report to an Ajax hub or a range extender. The device cannot operate standalone and does not connect to a third-party panel directly.
What does the 9NA region code mean?
It is the North America model, operating on the 905.0-926.5 MHz Jeweller band certified to UL/ULC standards. European models on 868 MHz are not interchangeable with it.
How quickly is a lost device detected?
Within 36 seconds. Jeweller polls each device continuously, so a jammed, removed or failed device is reported rather than quietly going offline.

Technical Specifications