Ajax MotionProtect Plus U Jeweller K-band microwave sensor
Ajax
- Pet immune
- 12m Detection Range
- 2 year guarantee
MotionProtect U Jeweller is a version of Ajax's motion detector, refined to meet strict UK standards. With a 12m detection range and pet immunity. (Read more)
PRODUCT DETAILS
The Ajax MotionProtect Plus U Jeweller is a high-performance wireless motion detector designed to deliver reliable intrusion detection while minimising false alarms in complex environments. Combining PIR (Passive Infrared) and microwave technologies, it accurately identifies human movement while ignoring typical interference sources such as air conditioners, heating systems, or moving curtains.
Built using Ajax’s advanced U-Jeweller wireless protocol, the MotionProtect Plus U provides an extended communication range and improved reliability, making it suitable for both residential and commercial installations. It offers a 12-metre detection range, pet immunity up to 20 kg, and anti-tamper protection, ensuring dependable performance in everyday use.
With a sleek design, detectors are seamlessly integrated into any space. Installation is simplified with wireless capabilities and the SmartBracket mounting panel, while remote configuration eliminates the need for on-site visits to resolve minor requests.
Interface
| No. | Description |
|---|---|
| 1 | LED indicator |
| 2 | Motion detector lens |
| 3 | SmartBracket mounting panel. To remove
the panel, slide it down |
| 4 | Perforated part of the mounting panel.
Necessary to trigger a tamper in case of any attempt to detach the
detector from the surface. Do not break it off |
| 5 | Tamper button. Triggers when an attempt
is made to detach the detector from the surface or remove it from
the mounting panel |
| 6 | Device switch |
| 7 | Detector QR code. Is used to connect
the device to the Ajax system |
Features:
- Dual-technology detection (PIR + Microwave) – prevents false triggers from heat, air movement, or light fluctuations
- U-Jeweller wireless communication – enhanced signal stability, long range, and low power consumption
- 12 m detection range and 88.5° field of view for wide coverage
- Pet immunity up to 20 kg – ideal for homes with small animals
- Automatic temperature compensation for consistent sensitivity in changing conditions
- Tamper protection – alerts the system if the device is removed or opened
- Up to 5 years battery life for low-maintenance operation
- Easy installation – quick mounting with SmartBracket and system pairing via QR code
- Compatible with Ajax hubs and range extenders using the U-Jeweller protocol
| Compatibility |
|
| Control panels |
Hub Plus Hub 2 (2G) Hub 2 (4G) Hub 2 Plus Hub Hybrid (2G) Hub Hybrid (4G) |
| Range extenders |
ReX ReX 2 |
| Communication |
|
| Jeweller communication technology |
Proprietary wireless communication
technology to transmit commands, alarms, and events. Key features:
|
| 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 |
| Maximum effective radiated power
(ERP) |
up to 20 mW Automatic power control to reduce power consumption and noise interference. |
| Radio signal modulation |
GFSK |
| Radio signal range |
up to 1,200 m Between detector and control panel (or range extender) in an open space. |
| Encrypted communication |
All the data stored and transmitted are
protected by block encryption with a dynamic key. |
| Frequency hopping |
Radio communication uses frequency hopping to prevent
interception and jamming. |
| Detection |
|
| Sensitive element |
PIR sensor microwave sensor K-band microwave sensor to prevent false alarms caused by thermal interference. Operation frequency: 24 GHz. |
| Motion detection distance |
up to 12* m When installed at the height of 2.4 m. |
| Motion detection angles |
horizontal: 88.5° |
| Motion detection speed |
from 0.3 to 2 m/s The direction of the detector lens should be perpendicular to an alleged intrusion path into the facility. |
| Sensitivity |
3 levels Adjusted by PRO or user with admin rights in the Ajax app. |
| Pet immunity |
weight: up to 20 kg height: up to 50 cm |
| False alarm prevention |
SmartDetect Software algorithm. |
| Temperature compensation |
Effective motion detection at temperatures from −10 °C to +40
°C. |
| Recommendations |
It is recommended to install the detector at a height of 2.4
m. The device is designed 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 |
| 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 Pre-installed. |
| Type |
Type C. |
| Calculated battery life |
up to 5 years |
| Detector’s operating voltage range |
2.1−3.3 V⎓ |
| Detector’s nominal operating voltage |
3 V⎓ |
| Quiescent detector’s current consumption at nominal
voltage |
31 μA |
| Maximum detector’s current consumption at nominal
voltage |
62 mA |
| Full capacity |
1,600 mAh |
| Low battery voltage |
2.5 V⎓ |
| End of life battery voltage |
2.1 V⎓ Device is switched off. |
| End of life battery capacity |
300 mAh |
| Manufacturer |
Panasonic |
| Enclosure |
|
| Dimensions |
110 × 65 × 50 mm |
| Weight of the white device |
96 g |
| Operating temperature range |
from −10 °C to +40 °C |
| Operating humidity |
up to 75% |
| Protection class |
IP50, IK04 |
| Complete set |
MotionProtect Plus Jeweller SmartBracket mounting panel with holding screw CR123A battery (pre-installed) Installation kit Quick start guide |
| AJA0397 | MotionProtect Plus U Jeweller Black | In stock | |
| AJA0371 | MotionProtect Plus U Jeweller White | In stock |
| Videos |
|---|
Ajax Superior Range. Rule your space| Files |
|---|
| MotionProtect Plus U Datasheet |
| MotionProtect 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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