United States
DoorProtect Plus U Jeweller
Wireless reed-switch opening detector with shock and tilt sensors
Product is not available in your region
Guardian for doors, windows, and valuables
DoorProtect Plus U Jeweller is a version of Ajax’s well-known opening detector, refined to meet strict UK standards. It secures the entry points most often targeted by intruders — including doors, windows, skylights, cabinets, and vaults. The device uses reed switch technology to detect opening, while a built-in accelerometer catches attempts to knock out, break, or tilt the door or window. With two magnet options and two reed switches, the detector can be installed on doors and windows of various designs.
2 reed switches
the magnet can be placed on the left or right side of the detector
Protection against contact chatter
to prevent false alarms
Adjustable sensitivity
of a shock sensor
Shock and tilt detection
with the built-in accelerometer
More installation options
with two magnets included
Chime feature
when operating with Ajax sirens or keypads with a built-in buzzer
Adjustable tilt angle and tilt alarm delay
Up to 5 years of operation
on the pre-installed battery
Remote control and configuration
Connector
for a third-party NC detector
Holding screw
to secure the device on a mounting panel
Informative push notifications
Critical
Ajax
Office: Opening detected, DoorProtect Plus U Jeweller in Hall No. 1
Ajax
Store: Shock detected by DoorProtect Plus U Jeweller in Entrance No. 1
2 colors
Up to 1,200 m
of communication range with an Ajax hub or range extender1
Jeweller radio communication
Power adjustment
In an Ajax system, you can combine devices of all product categories: Intrusion protection (both Superior and Baseline), Video surveillance, Fire and life safety, or Comfort and automation. Create the system to suit your needs and manage it in a single interface.
Wherever there is a risk of intrusion
Office
School
Store
Private clinic
Barbershop
Museum
Discover future-proof hardware
Two reed switches
Accelerometer
Pre-installed battery
Two magnets of different sizes
Tamper button to detect device dismantling
Jeweller antenna
Connector for a third-party NC detector
SmartBracket mounting panel
Holding screw for a more reliable fastening
No intruder goes unnoticed
Reliable opening detection
At the heart of DoorProtect Plus U Jeweller is robust reed switch technology. The reed switch changes its state when the detector’s magnet moves closer or farther away. Users and the monitoring company instantly receive a notification in Ajax apps when the door or window is opened or closed. The device features two reed switch contacts. Thus, the magnet can be installed on either the right or left side, providing greater flexibility during installation. This ensures accurate and efficient detection, no matter where the device is mounted.
Flexible installation with two reed switches and two magnets of different sizes
Plastic reed switches: more durable than the glass ones
Protection against contact chatter
Smart shock detection
Thanks to its built-in accelerometer, DoorProtect Plus U Jeweller detects shocks and vibration, instantly alerting users and the monitoring company when someone tries to force a door or break a window. Installers can adjust the accelerometer’s sensitivity in an Ajax app and even set it to ignore a single impact. This helps prevent false alarms caused by external factors, such as nearby railways, busy streets, or overhanging tree branches.
Early threat detection with a shock sensor
Three sensitivity levels
The option to ignore a single impact
Error-proof tilt detection
DoorProtect Plus U Jeweller keeps doors and windows secured even if intruders try to shift them slightly and bypass traditional reed switch detection. With an adjustable tilt angle, the detector can protect windows in ventilation mode, raising an alarm only if the tilt exceeds the set threshold. The adjustable tilt alarm delay helps avoid false alarms caused by brief or accidental tilt, such as momentary gusts of wind.
Instant detection of tilt angle changes
Adjustable tilt sensor activation angle from 5° to 25°
Configurable tilt alarm delay
Enhanced security with additional detectors
DoorProtect Plus U Jeweller can expand the entry point setup by integrating2 third-party detectors. With a connector for a third-party device, the detector can add an existing or new wired opening, motion, or vibration detector with an NC contact to an Ajax system. This can extend the coverage area, incorporate already installed devices, and manage them seamlessly in a single Ajax app — all within one unified security ecosystem.
More than just a detector
When paired with an Ajax siren or keypad with a built-in buzzer, DoorProtect Plus U Jeweller can function as a shopkeeper’s bell, signaling a visitor’s arrival. Installers can assign one of four available sound patterns to different entrances. This way, it will be easy to tell whether someone opened the main door or a back entrance. All settings are configured remotely with a few clicks in an Ajax app.
Sound signals for doors or windows being opened
Signal customization for different security groups
Customizable signals for each entrance
For the Chime feature, the system requires a siren or a keypad with a built-in buzzer. Choose from a wide selection of indoor and outdoor sirens to unlock this feature and enhance on-site security.
Wire-free flexibility and reliable performance
The wireless design of DoorProtect Plus U Jeweller provides maximum installation flexibility — with a hassle-free setup and no extra steps for the device to begin operating. Each device battery is thoroughly tested during production, and Ajax Systems inspects every unit to guarantee reliable performance. After up to five years of autonomous operation, the battery can be easily replaced. Its status is always visible in Ajax apps. Users and monitoring companies receive low battery notifications months in advance, so the replacement is always well-timed.
Real-time testing during battery production
Up to 5 years of autonomous operation
Early low battery notifications
Jeweller
Unique wireless technology
Jeweller is Ajax’s proprietary radio protocol for secure two-way communication. It provides block encryption and device authentication during each communication session with an Ajax hub or radio signal range extender. Jeweller prevents sabotage, spoofing, and data theft.
Up to 1,200 m of communication range in an open space
Data encryption
Notification of jamming and connection loss
Automatic power adjustment
Communication through steel and concrete
Some facilities have thick walls, metal partitions, or sheer distances that affect signal quality. Ajax range extenders are designed to increase the range of a wireless network and deliver stable connection with a hub despite the obstacles. And by choosing the model with an Ethernet cable connector, you get an additional communication channel. А single system can accommodate up to five range extenders.
Up to 5 range extenders within one system
Ethernet-equipped model available
System supervision
All Ajax devices perform automatic self-diagnosis and report their states to the hub. Essential parameters, including tamper, communication, power supply, and sensor states, are continuously monitored. The Ajax Cloud server controls communication between the hub and Ajax apps, ensuring instant notifications for ARCs and users. In case of any malfunction or communication failure, an engineer is informed immediately to provide necessary services.
Automatic device self-diagnosis with a state report
Regular polling to display the current device state in Ajax apps
Instant maintenance notifications
Sabotage protection
Effortless installation and setup
DoorProtect Plus U Jeweller is ready to operate straight out of the box. With the SmartBracket mounting panel, installation is a breeze — it does not require disassembling the enclosure. Adding the detector to an Ajax system is just as simple: scan the QR code in an Ajax app to pair the device with the hub. All settings can be adjusted remotely at any time, eliminating the need for on-site visits.
Pairing with the security system via a QR code
Effortless and secure installation with the SmartBracket mounting panel
Configuring and testing in Ajax mobile and desktop apps
The Ajax PRO Desktop app for macOS and Windows
In an open space.
DoorProtect Plus U Jeweller cannot power a third-party detector. The power supply for this detector should be connected separately.
Technical information
DoorProtect Plus U Jeweller
More Ajax opening detectors
Ajax product categories
In an Ajax system, you can combine devices of all product categories: Intrusion protection (both Superior and Baseline), Video surveillance, Fire and life safety, or Comfort and automation. Create the system to suit your needs and manage it in a single interface.
