Ajax DoorProtect U Jeweller | Wireless Reed-Switch Magnetic Opening Detector | Up to 7 Years Battery
Summary
The Ajax DoorProtect U Jeweller is a wireless opening detector engineered to meet stringent UK market standards, delivering reliable perimeter protection for doors, windows and safes. This Baseline series device utilises robust plastic reed-switch technology rated for millions of operations, providing superior durability compared to traditional glass reed switches whilst maintaining precision detection performance.
Featuring dual reed switches housed in resilient plastic capsules, the DoorProtect U Jeweller offers exceptional installation flexibility with magnet placement options on either the left or right side of the detector. The kit includes two magnets of different sizes—a large magnet operating up to 2cm from the detector and a small magnet functioning up to 1cm—enabling installers to adapt to various door and window frame configurations. Anti-chatter technology minimises false alarms caused by vibrations or environmental factors, ensuring reliable operation in demanding environments.
Communicating via Ajax’s secure Jeweller radio protocol with encrypted data transmission and frequency hopping, the detector maintains reliable wireless connectivity up to 1,200 metres from the hub or range extender in open space. The pre-installed CR123A battery delivers up to 7 years of maintenance-free operation, with the system providing advance low-battery notifications months before replacement is required. Installation is streamlined through the SmartBracket mounting panel, QR code pairing via the Ajax apps, and the option to integrate third-party wired detectors with NC contacts, expanding system capabilities whilst maintaining unified management through a single interface.
Features
- Wireless reed-switch opening detector designed to UK standards (EN 50131 Grade 2, PD 6662:2017 compliant)
- Dual plastic reed switches in protective capsules for enhanced durability and installation flexibility
- Two magnet options included: large magnet (up to 2cm range) and small magnet (up to 1cm range)
- Magnet can be positioned on either left or right side of detector for versatile mounting
- Anti-chatter technology prevents false alarms from vibrations or brief disturbances
- Connector for integrating third-party wired detectors with NC (normally closed) contact type
- Jeweller secure radio protocol with block encryption and dynamic key protection
- Frequency hopping technology prevents interception and radio jamming
- Communication range up to 1,200 metres with hub or range extender in open space
- Frequency bands: 868.0-868.6 MHz (dependent on sales region)
- Automatic power control reduces consumption and minimises noise interference
- Pre-installed CR123A battery providing up to 7 years of operation
- Low-battery notifications provided months in advance of replacement requirement
- Chime feature enables detector to function as shopkeeper’s bell when system is disarmed (requires Ajax siren)
- Four assignable sound patterns for different entrances when used with Ajax sirens
- SmartBracket mounting panel enables tool-free installation without disassembling enclosure
- QR code pairing for rapid setup via Ajax mobile apps
- Remote configuration and management through Ajax apps
- Tamper alarm activates upon unauthorised removal from surface or mounting panel
- Device authentication prevents spoofing and unauthorised system access
- Communication loss detection with instant notifications to users and monitoring stations
- Regular polling displays current device state in real-time
- Operating temperature range: -10°C to +40°C
- Operating humidity: up to 75%
- Protection class: IP50, IK04
- Available in white and black finishes
- Compact dimensions: 103 × 22 × 21mm (detector), weight 37g
- Compatible with all Ajax Baseline hubs and range extenders
- Integrates with Ajax Superior and Fibra product lines for unified security ecosystem
FAQs
What is the difference between DoorProtect U Jeweller and standard DoorProtect Jeweller?
The DoorProtect U Jeweller is specifically designed and certified to meet UK market standards including EN 50131 Grade 2 and PD 6662:2017 compliance. Both models feature dual reed switches and similar functionality, but the U variant ensures compliance with British security standards required for professional installations and insurance-approved systems in the UK market.
Can the magnet be installed on either side of the detector?
Yes, the DoorProtect U Jeweller features dual reed switches allowing the magnet to be positioned on either the left or right side of the detector. This provides exceptional installation flexibility for various door and window configurations. The kit includes both a large magnet (operating up to 2cm) and a small magnet (operating up to 1cm) to accommodate different frame widths.
How long does the battery last?
The pre-installed CR123A battery provides up to 7 years of operation under typical usage conditions. The Ajax system monitors battery status continuously and provides low-battery notifications months in advance, allowing ample time for planned replacement. Battery life may vary based on communication frequency settings and environmental conditions.
Can I connect third-party detectors to the DoorProtect U Jeweller?
Yes, the DoorProtect U Jeweller includes a connector for integrating third-party wired detectors with NC (normally closed) contact type. This allows you to add existing or new wired opening, motion or vibration detectors to your Ajax system. However, the DoorProtect U Jeweller cannot power the third-party detector—an independent power supply must be connected separately.
What is the Chime feature and how does it work?
When paired with an Ajax siren or keypad with built-in buzzer, the DoorProtect U Jeweller can function as a shopkeeper’s bell. When the system is disarmed and a door is opened, the siren emits one of four configurable sound patterns. Different patterns can be assigned to separate entrances, making it easy to identify whether someone entered through the main door or a back entrance. All settings are configured remotely through the Ajax apps.
What is the wireless communication range?
The DoorProtect U Jeweller communicates with Ajax hubs and range extenders using the Jeweller radio protocol, achieving a communication range of up to 1,200 metres in open space. Actual range will vary based on building construction, interference and environmental factors. The system features automatic power control to optimise range whilst minimising power consumption.
Is the detector suitable for outdoor use?
No, the DoorProtect U Jeweller is designed for indoor use only. With an IP50 protection rating, it is protected against dust ingress but not suitable for exposure to weather conditions. For outdoor applications, consider alternative Ajax detectors with appropriate weatherproof ratings.
How is the detector installed?
Installation is streamlined using the included SmartBracket mounting panel, which allows the detector to be mounted without disassembling the device enclosure. After physically mounting the bracket, the detector is added to the Ajax system by scanning the QR code using the Ajax mobile app. The entire setup process takes just minutes and requires no specialist tools or technical expertise.
Specifications
- Product Type: Wireless opening detector with dual reed switches
- Product Line: Ajax Baseline
- Design Region: UK market standards
- Compliance Standards: EN 50131 (Grade 2), PD 6662:2017
- Detection Technology: Plastic reed switches (2× switches)
- Sensitive Element: 2× reed switch
- Third-Party Integration: Wired detector with NC (normally closed) contact type
- Communication Protocol: Jeweller radio protocol
- Frequency Bands: 868.0-868.6 MHz
- Communication Range: Up to 1,200m in open space
- Data Encryption: Block encryption with dynamic key
- Anti-Jamming: Frequency hopping technology
- Power Supply: 1× CR123A battery (pre-installed)
- Battery Life: Up to 7 years
- Operating Temperature: -10°C to +40°C
- Operating Humidity: Up to 75%
- Protection Class: IP50, IK04
- Detector Dimensions: 103 × 22 × 21mm
- Detector Weight: 37g
- Magnet Options: Large magnet (up to 2cm range), small magnet (up to 1cm range)
- Colour Options: White, black
- Installation Method: SmartBracket mounting panel with holding screw
- Setup Method: QR code pairing via Ajax apps
- Tamper Protection: Removal detection from surface or mounting panel
- Chime Feature: Yes (requires Ajax siren or keypad with buzzer)
- Sound Patterns: 4 configurable patterns for entrance identification
- Hub Compatibility: All Ajax Baseline hubs and range extenders
- Cross-Line Compatibility: Compatible with Ajax Superior and Fibra products
- Box Contents: DoorProtect U Jeweller detector, SmartBracket mounting panel with holding screw, CR123A battery (pre-installed), big magnet, small magnet, outside-mounted terminal clamp, installation kit, quick start guide
Downloads
- Datasheet (Adobe PDF)
