AJAX FIBER | 44394.21.BL1 # 44394 | Ajax Superior DoorProtect Plus Fiber black is a professional wired sensor for doors and windows that combines advanced perimeter security and absolute reliability in Ajax systems. It integrates double reed switches for opening detection and an accelerometer with shock and tilt sensors , offering complete protection against intrusions, break-in attempts and vibrations. Communication takes place via encrypted two-way wired Fiber technology up to 2,000 meters , with constant monitoring of the device status. Designed for professional contexts, it features anti-sabotage protection with double tamper and quick configuration via the Ajax app, ensuring high performance and operational continuity. Ajax
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44394.21.BL1 | WIRED OPENING, SHOCK, AND TILT DETECTOR WITH TWO REED RELAYS AND ACCELEROMETER

The Ajax Superior DoorProtect Plus Fibra, 44394.21.BL1, black , is a professional Ajax wired sensor designed for advanced door and window protection in residential and commercial settings. It combines opening detection with shock and tilt monitoring thanks to an integrated high-precision system, providing comprehensive perimeter security. Wired Fibra technology with encrypted two-way communication up to 2,000 meters ensures stability, continuous monitoring, and data protection. Designed for professional installations, it ensures tamper resistance, operational reliability, and quick setup via the Ajax app.
Main specifications:
- Double reed switch for reliable detection of door and window opening
- Impact and tilt sensors with integrated accelerometer adjustable via app
- Bidirectional encrypted wired fiber communication up to 2,000 m
- Anti-tamper protection with double tamper and connection loss detection
- Direct power supply from the fiber line for battery-free operational continuity
- Quick installation and configuration via Ajax app
Further details
Technical data sheet
| 44394.21.BL1 | |
| Communication | |
| Fiber communication technology | Proprietary wired communication technology. Fiber combines the reliability of wires with the freedom of radio connection. Key features:
|
| Line connection | 4-core cable |
| Fiber line length | up to 2,000 meters up to 6,500 ft When using the U/UTP cat.5 twisted pair. Encrypted communication |
| Detection | |
| Sensitive element | 1 × accelerometer 2 x reed switches The magnet can be installed to the right or left side of the detector. |
| Additional detector connection | Wired detector with the normally closed (NC) contact type |
| Shock sensor sensitivity | 3 levels Adjusted by PRO or user with admin rights in the Ajax app The detection radius depends on the material type
|
| Option to ignore single shock | Enabled 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. |
| 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. The device is designed for indoor use only. |
| Sabotage protection | |
| Tamper alarm | Alerts of attempts to detach the detector from the surface or remove the mounting panel. |
| Protection against forgery | devices authentication |
| Power Supply | |
| Fiber line power supply | 5−30 V⎓, up to 23 mW The detector is powered by the control panel. |
| Detector's operating voltage range | 5−30 V⎓, up to 23 mW The detector is powered by the control panel. |
| Device's nominal operating voltage | 24 V⎓ |
| Quiescent device's current consumption at nominal voltage | 0.043 mA |
| Maximum device's current consumption at nominal voltage | 1.55 mA |
| Enclosure | |
| Color | Black |
| Dimension | 90.5 × 21 × 18.5 mm 3.56″ × 0.83″ × 0.73″ |
| Weight | 15 g 0.53 oz |
| Operating temperature range | from −10 °C to +40 °C from 14 °F to 104 °F |
| Operating humidity | up to 75% |
| Casing protection class | IP50, IK04 |
| Complete set | Superior DoorProtect Plus Fiber Big magnet Small magnet Installation kit Quick start guide |
| Warranty | 24 months |



