The Ajax CombiProtect U Jeweller detects intruders moving through a protected area and reports to the Ajax hub. It is wireless, using Ajax's encrypted two-way Jeweller radio.
We supply and install Ajax alarm and video systems across London and the Home Counties. Add this to your package and we will check everything works together before sending a written quote.
Key specifications
| Jeweller communication technology | Proprietary wireless communication technology to transmit commands, alarms, and events. Key features: Two-way communication.; Advanced sabotage protection.; … |
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| 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. |
| Sensitive element | 1 × PIR sensor |
| Motion detection distance | up to 12 m When installed at a height of 2.4 m. |
| Motion detection angle | horizontal: 88.5° |
| Motion detection speed | from 0.3 to 2.0 m/s The direction of the detector lens should be perpendicular to an alleged intrusion path into the facility. |
| Sensitivity | 3 levels Adjusted by a PRO or a user with admin rights in Ajax apps. |
| 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. |
| Sensitive elements | electret microphone |
| Glass break detection distance | from 0.3 up to 9 m |
| Glass break detection angles | horizontal: 180° vertical: N/A |
| Min size of the glass | 400 × 400 mm Detection distance up to 9 m for all glass types when the High sensitivity level is selected. |
| Tamper alarm | Notifications on attempts to detach the detector from the surface or remove it from the mounting panel. |
Specifications are the manufacturer’s published figures.








