AJAX FIBER | 143556.177.WH1 (ex. 461340.177.WH2) # 143556 | Ajax Superior DoorProtect G3 Fiber white is a professional-grade wired sensor designed for advanced protection of doors and windows in Ajax systems. It integrates a double reed switch for opening detection , an accelerometer for shock and tilt changes , and a magnetic masking sensor , ensuring complete control against break-in and tampering attempts. Wired Fiber technology with encrypted two-way communication up to 2,000 meters ensures signal stability and constant monitoring. Grade 3 certified, it offers anti-sabotage protection with a double tamper and is ideal for professional, high-security installations. Ajax
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143556.177.WH1 | OPENING DETECTOR WITH SHOCK, TILT, AND MAGNETIC MASKING SENSORS

The Ajax Superior DoorProtect G3 Fibra, 143556.177.WH1 (ex. 461340.177.WH2 ), white is a professional Grade 3 wired sensor designed for advanced door and window protection in Ajax systems. It combines comprehensive perimeter control thanks to multiple integrated technologies, offering maximum reliability against intrusion and tampering attempts. Encrypted two-way wired Fiber communication up to 2,000 meters ensures signal stability, constant monitoring, and data security. Designed for professional installations, it ensures high sabotage resistance and quick setup via the Ajax app.
Main specifications:
- Opening detection with high reliability double reed switch
- Shock and tilt sensor with built-in adjustable accelerometer
- Magnetic masking detection against spoofing attempts
- Bidirectional encrypted wired fiber communication up to 2,000 m
- Anti-tamper protection with double tamper and device authentication
- Direct power supply from the fiber line without batteries for operational continuity
Further details
Technical data sheet
| 143556.177.WH1 | |
| 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 1 x magnetic masking sensor 2 x reed switches The magnet can be installed to the right or left side of the detector. |
| Protection against reed switch chatter | 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 Adjusted by PRO or user with admin rights in the Ajax app |
| 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. |
| Spacers | 2 pcs They are needed to install the detector or the magnet on a metal surface, as they help to reduce the distance between the detector and the magnet. You can use one or two spacers at once. |
| Chime | When the system is disarmed, the siren makes a special sound to notify that the opening detectors are triggered |
| Recommendations | Do not install the detector using both magnets at the same time. The detector recognizes only one magnet on the left or right side of it. The device is designed for indoor use only. |
| Sabotage protection | |
| Tamper alarm | 2 tampers Notifications on attempts to detach the detector from the surface or open the front lid |
| Magnetic masking sensor | The device detects an attempt to mask the main magnet of Superior DoorProtect G3 Fibra with a fraudulent magnet. |
| Holding screw | to secure the detector on the mounting panel |
| Protection against forgery | devices authentication |
| Power Supply | |
| Fiber line power supply | 5−30 V⎓, up to 35 mW The detector is powered by the control panel. |
| Enclosure | |
| Color | White |
| Detector dimensions | 102 × 21 × 19.2 mm 4.02″ × 0.83″ × 0.76″ |
| Detector dimensions | 102 × 21 × 19.2 mm 4.02″ × 0.83″ × 0.76″ |
| Weight | 62 g 2.19 oz |
| Operating temperature range | from −10 °C to +40 °C from 14 °F to 104 °F |
| Operating humidity | up to 75% |
| Complete set | Superior DoorProtect G3 Fibre Big magnet Small magnet Installation kit Quick start guide |
| Warranty | 24 months |



