Ajax DualCurtain Outdoor Jeweller: Double Curtain Sensor with Advanced Detection and Tamper Protection

Ajax DualCurtain Outdoor Jeweller: Double Curtain Sensor with Advanced Detection and Tamper Protection

 

39055.81.WH1 # 39055 Ajax DualCurtain Outdoor Jeweller is a double-curtain motion sensor designed for advanced perimeter protection, featuring independent detection on both sides , coverage up to 30 meters and the ability to adjust distance and direction for precise threat analysis. Thanks to the Near Area Detection function, the device extends the detection field with a dedicated angle to detect close-up movements, while Jeweller radio communication up to 1,700 m ensures stable and secure integration into the system. The structure integrates anti-masking and active tamper , guaranteeing protection against sabotage and removal, while temperature compensation and pet immunity ensure reliable performance in any conditions. With up to 4 years of battery life and an IP54- certified body, it is ideal for protecting entrances, windows, fences and shop windows with maximum precision. Ajax

Technical Data Sheet

referencia : 39055.81.WH1

brand : Ajax Systems

EAN: 4823114017353

Manufacturer Object ( [id] => 31 [name] => Ajax Systems [description] =>

Establecido en 2011, Ajax Systemconstruye sistemas inalámbricos de incendio y alarma con la tecnología inalámbrica JEWELLER que le permite monitorear de manera segura todos los dispositivos de red conectados. Ajax System ofrece soluciones para el hogar, la oficina o las actividades comerciales, gestionables a través de la App, siempre actualizadas y compatibles con los sistemas iOS y Android. Los sistemas de alarma de Ajax System son fáciles de instalar, de hecho sólo toma 15 segundos conectar la unidad de control a los sensores. Además, pueden integrarse con las cámaras de vigilancia, tienen un margen de error casi nulo y, en caso de peligro, en menos de 150 milisegundos envían una notificación (sms, push o call).

[short_description] =>

Ajax SystemsAjax Systems


Los sistemas de alarma Ajax system utilizan la última tecnología inalámbrica que hace que todos los productos sean fiables y estén siempre conectados. Además de su excelente rendimiento, los sistemas de alarma Ajax se distinguen por su diseño moderno y elegante.

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39055.81.WH1 | Two-Way Wireless IR Curtain Motion Detector


Ajax

The Ajax DualCurtain Outdoor Jeweller, 39055.81.WH1, is a double-curtain motion sensor designed for professional perimeter protection, featuring two independent detection zones to cover up to 30 meters with high precision. Thanks to the innovative Near Area Detection function, the device is able to detect close movements towards the building, while advanced optics , temperature compensation and pet immunity ensure stable performance in any conditions. Jeweller radio communication up to 1,700 m ensures secure and continuous transmission of events, while the system integrates anti-masking and active tamper to prevent sabotage and tampering. With up to 4 years of battery life and IP54 protection, it is ideal for entrances, windows, shop windows and fences.

Main specifications:

- Independent detection on both sides for coverage up to 30 m

- Near Area Detection to detect close movements with a dedicated radius

- Advanced optics and thermal compensation to reduce false alarms

- Pet immunity for residential and commercial use

- Anti-sabotage protection with anti-masking and tamper

- Stable and encrypted Jeweler communication up to 1,700 m

- Up to 4 years of battery life with integrated batteries and IP54 protection

Further details

✅ Jeweler Communication :
The DualCurtain Outdoor uses the Jeweller radio protocol, a long-range technology that ensures two-way communication up to 1,700 meters , ensuring stable and secure transmissions thanks to encryption, device authentication, and frequency hopping to prevent interference and jamming. The system uses timed frames to synchronize the devices and ensure that each alarm is delivered without delay, maintaining constant monitoring of the sensor's status.
✅ Detection :
The sensor offers a dual-curtain detection system with two independent zones , each equipped with advanced optics and coverage up to 15 meters per side , for precise perimeter protection. Near Area Detection technology expands the monitored area with an additional 40° angled IR beam, ideal for detecting intrusions near walls. Thanks to temperature compensation and a dedicated optical design, the device maintains constant sensitivity in different weather conditions, with pet immunity to avoid false alarms.
✅ Anti-sabotage protection:
DualCurtain Outdoor integrates a comprehensive tamper-proof security system, with anti-masking that detects coverings or attempts to obscure the optics, and an active tamper that immediately signals the removal or opening of the device. It detects loss of communication in less than a minute, ensuring continuous protection against sabotage attempts and physical interference.
✅ Power supply:
The sensor is powered by long-life batteries that provide up to 4 years of battery life , allowing for constant operation without frequent maintenance. Energy efficiency is optimized at both the hardware and software levels, maintaining high performance even in variable environmental conditions, making the device ideal for long-term outdoor installations.

Technical data sheet

39055.81.WH1
Communication
Jeweler communication technology Proprietary wireless communication technology to transmit commands, alarms, and events.
Key features:
  • Two-way communication.
  • Advanced anti-sabotage.
  • Block encryption featuring a dynamic key.
  • Instant notifications.
  • Remote configuration via the Ajax apps.
Radio frequency bands 866.0 - 866.5 MHz
868.0 - 868.6 MHz
868.7 - 869.2 MHz
905.0 - 926.5 MHz
915.85 - 926.5 MHz
921.0 - 922.0 MHz
Depence on the sales reaction
Maximum effective radiated power (ERP) up to 20 mW
Automatic power control to reduce power consumption and radio interference.
Radio signal modulation GFSK
Radio signal range Up to 1,700 m
Between the detector and a hub (or radio signal range extender) in an open space.
Encrypted radio communication All the data stored and transmitted are protected by block encryption featuring a dynamic key.
Frequency hopping Radio communication uses frequency hopping to prevent interception and jamming
Detection
Sensitive element 4 × IR sensors
Motion detection distance 4–15 m for each side
When installed at a height of 0.8 to 1.3 m.
Adjusted separately for each side using sliders on the detector rear panel.
Viewing angles horizontal: 4.5°
vertical — 90°
Near zone detection When enabled, the detector's upper IR sensor receives an additional sector of view, directed at an angle of 40° downward of the main sector.
This is necessary to detect motion near the detector and reduce blind spot.
Adjusted separately for each side using sliders on the detector rear panel.
Viewing angle shift When enabled, the optical system viewing angle can be shifted by 3° in the horizontal plane.
Adjusted separately for each side using sliders on the detector rear panel.
Sensitivity 3 levels
Adjusted by PRO or user with admin rights in the Ajax app.
Pet immunity weight: not relevant
height: up to 80 cm
False alarm prevention ELSA
SmartDetect
Software algorithm
Temperature compensation Effective motion detection at temperatures
from −25°C to +60°C.
Recommendations The detector is installed at a height of 0.8–1.3 meters from ground level when used to protect doors, arches, other passages, or the area in front of windows. Otherwise, if the detector is used to protect windows, it is installed at a height of 0.5–0.6 meters from the window sill.
Anti-sabotage protection
Anti-masking system DualCurtain Outdoor Jeweler detects the following types of masking:
  • Obstacles in front of the detector's lenses at a distance of up to 10 centimeters (depends on the material).
  • Painting over the detector's lenses
  • Taping the lenses or the detector's sides
Tamper alarm Alerts of attempts to detach the detector from the surface or remove it from the mounting panel.
Protection against spoofing device authentication
Holding screw to secure the detector on SmartBracket
Communication loss detection after 36 s
Detection time depends on the Jeweler settings.
Power Supply
Battery 2 × CR123A batteries
Up to 4 years of battery life.
Enclosure
Color White
Dimension 174 × 123 × 88 mm
Weight 615 g
Operating temperature range from −25°C to +60°C
Operating humidity up to 95%
Casing protection class IP54
Complete set DualCurtain Outdoor Jeweler
SmartBracket mounting panel
2 × CR123A batteries
Installation kit
Quick start guide
Warranty 24 months
All our products are in conformity with the in force CE normative (read here). To ask for a copy of the certification fill out this form

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