Ajax DoorProtect Plus U Jeweller
Ajax
- Open/Shock/Tilt Sensor
- 5 Year Battery Life
- Quick & Easy Set Up
The Ajax DoorProtect Plus U is a wireless detector and magnet opening, shock, and tilt detector that operates with the Ajax wireless security system. (Read more)
PRODUCT DETAILS
The Ajax DoorProtect Plus U Jeweller is an advanced wireless door and window contact sensor that provides reliable perimeter protection while detecting vibration, tilt, and opening events. Using the latest U-Jeweller wireless technology, it offers extended communication range, improved signal reliability, and long battery life — making it ideal for both residential and commercial security systems.
This versatile sensor doesn’t just detect when a door or window is opened — it also identifies impact and tilt movements, allowing early detection of attempted break-ins or tampering before entry occurs. It operates flawlessly with Ajax hubs and range extenders using the U-Jeweller protocol, ensuring stable performance and fast alarm transmission.
The DoorProtect Plus U consists of two modules - detector and magnet. The set includes two magnets: the big magnet is installed at a distance of up to 2 cm, and the small magnet up to 1 cm. Ready to operate straight out the box: the battery is already installed, therefore there is no need to disassemble the detector. With one click, it can be connected to the hub in the mobile application. It can be mounted on the SmartBracket in just a few minutes.
Features:
- 3-in-1 detection – monitors door/window opening, vibration, and tilt
- U-Jeweller wireless communication – provides up to 1,700 m range and enhanced signal stability
- Instant alarm transmission – alerts the system in under a second
- Adjustable sensitivity – tailor vibration and tilt detection to suit the installation
- Pet- and vibration-resistant – filters out minor shocks or movement to avoid false alarms
- Battery life up to 5 years – powered by a replaceable CR123A cell
- Tamper protection – alerts if the sensor is opened or removed
- Compact design – blends seamlessly with modern interiors
- Available in white or black to suit any décor
- Easy installation – mounts with SmartBracket and pairs via QR code
| Communication |
|
| Jeweller communication technology |
Proprietary wireless communication
technology to transmit commands, alarms, and events. Key features: Two-way communication. Advanced sabotage protection. Block encryption featuring a dynamic key. Instant notifications. Remote control and configuration in Ajax apps. |
| Frequency bands |
868.0–868.6 MHz |
| Maximum effective radiated power
(ERP) |
up to 20 mW Automatic power control to reduce power consumption and radio interference. |
| Radio signal modulation |
GFSK |
| Radio communication range |
up to 1,200 m Between the device and a hub (or a range extender) in an open space. |
| Encrypted communication |
All stored and transmitted data is protected
by block encryption featuring a dynamic key. |
| Frequency hopping |
To prevent radio interference and
jamming. |
| Detection |
|
| Sensitive elements |
1 accelerometer 2 reed switches The magnet can be installed to the left or right side of the detector. |
| Magnets |
small and big one come in the set The small magnet operates at a distance of up to 1 cm from the detector, and the big magnet — up to 2 cm. |
| Protection against reed switch chattering |
The detector ignores vibrations lasting up to 0.15
s. |
| Input to connect an additional detector |
Wired detector with the normally closed (NC) contact
type. |
| Shock sensor sensitivity |
3 levels |
| Option to ignore single shock |
Adjusted by PRO or user with admin rights in the Ajax
app. |
| Tilt sensor activation threshold |
from 5° to 25° Adjusted by PRO or user with admin rights in the Ajax app. |
| Chime |
The siren makes a special sound to notify that the opening
detectors are triggered when the system is disarmed. |
| Recommendations |
Do not install the detector using both magnets at the same
time. The detector recognizes only one magnet on one side of the
detector — left or right. For indoor use only. |
| Sabotage
protection |
|
| Tamper alarm |
Notifications on attempts to detach the detector from the
surface or remove it from the mounting panel. |
| Holding screw |
to secure the detector on SmartBracket |
| Protection against spoofing |
device authentication |
| Communication loss detection |
after 36 s Detection time depends on the Jeweller or Jeweller/Fibra settings. |
| Power supply |
|
| Battery |
1 × CR123A |
| Type |
type C |
| Calculated battery life |
up to 5 years |
| Operating voltage range |
2.1−3.3 V⎓ |
| Nominal operating voltage |
3 V⎓ |
| Quiescent current consumption at nominal voltage |
0.013 mA |
| Maximum current consumption at nominal voltage |
10.5 mA |
| Full battery capacity |
1,600 mAh |
| Low battery voltage |
2.5 V⎓ |
| Low battery recovery voltage |
2.7 V⎓ |
| End-of-life battery voltage |
2.1 V⎓ |
| End-of-life battery capacity |
300 mAh |
| Manufacturer |
Panasonic |
| Enclosure |
|
| Dimensions |
103 × 22 × 21 mm |
| Dimensions of the big magnet |
103 × 22 × 21 mm |
| Dimensions of the small magnet |
55 × 11 × 6 mm |
| Weight of the white device |
37 g |
| Weight of the black device |
34 g |
| Operating temperature range |
from −10 °C to +40 °C |
| Operating humidity |
up to 75% |
| Protection class |
IP50, IK04 |
| Complete set |
DoorProtect Plus U Jeweller SmartBracket mounting panel with holding screw CR123A battery (pre-installed) Big magnet Small magnet Outside-mounted terminal clamp Installation kit Quick start guide |
| AJA0401 | DoorProtect Plus U Jeweller White | In stock | |
| AJA0402 | DoorProtect Plus U Jeweller Black | Back order |
| Videos |
|---|
Ajax Superior Range. Rule your space| Files |
|---|
| Ajax DoorProtect Plus U Datasheet |
| Ajax DoorProtect Plus U User Manual |
| Links* |
|---|
| Ajax website |
| Ajax support site |
* External websites provide additional content that supports the content on connectec.uk however the external Web site is subject to change and is beyond the control of Connectec Ltd. Connectec cannot guarantee the accuracy of content on external websites and does not endorse the information or products on any external websites. You will be subject to the external websites own privacy policy when you follow these links.
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