The Ajax DoorProtect Plus U Detector protects doors, windows and glass, reporting to the Ajax hub the moment something is opened or broken. 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
| Classification | Combined point magnetic contact and vibration radio channel security detector |
|---|---|
| Installation method | Indoors |
| Compatibility | Operates with Hub, Hub Plus, Hub 2, and ReX |
| Sensing element | Reed switch, accelerometer |
| Activation threshold | Small magnet: 1 cm, Big magnet: 2 cm |
| Jeweller radio technology | Communication range with central unit: up to 1,700 m in an open space, Two-way communication between devices, Operating frequencies: 868.0 – 868.6 MHz, Self-… |
| Power supply | Battery: CR123A battery, Power supply voltage: 3 V, Battery life: up to 5 years |
| Permissible humidity | Up to 75% |
| Operating temperature range | +5°С to +40°С |
| Anti-sabotage | Protection against fraud, Jamming detection, Tamper-resistant |
| Dimensions | 90mm х 20mm × 25mm |
| Weight | 29g |
Specifications are the manufacturer’s published figures.








