Fibra G3 DoorProtect white


DoorProtect G3 Fibra

Opening detector with shock, tilt, and magnetic masking sensors



Fibra communication technology

Proprietary wired communication technology. Fibra combines the reliability of wires with the freedom of radio connection.
Key features:
  • Two-way communication.
  • Advanced anti-sabotage protection.
  • Instant notifications.
  • Remote configuration via the Ajax apps.

Line connection

4-core cable

Fibra line length

up to 2,000 meters
When using the U/UTP cat.5 twisted pair cable.

Encrypted communication


Sensitive elements

1 accelerometer
1 magnetic masking sensor
2 reed switches

Protection against reed switch chattering

The detector ignores vibrations lasting up to 0.15 s.

nput to connect an additional detector

Wired detector with the normally closed (NC) contact type.

Shock sensor sensitivity

3 levels
Adjusted by a PRO or a user with admin rights in the Ajax app.

Option to ignore single shock

Adjusted by a PRO or a user with admin rights in the Ajax app.

Tilt sensor activation threshold

from 5° to 25°
Adjusted by a PRO or a user with admin rights in the Ajax app.


2 pcs.
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.


When the system is disarmed, the siren makes a special sound to notify that the opening detectors are triggered.

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 DoorProtect G3 Fibra with a fraudulent magnet.

Holding screw

to secure the detector on the mounting panel

Protection against spoofing

device authentication

Power supply

Fibra line power supply

5−30 V⎓, up to 35 mW
The detector is powered by the hub.


Detector dimensions

102 × 21 × 19.2 mm

Magnet dimensions

102 × 21 × 19.2 mm

Detector weight

62 g

Operating temperature range

from −10 °C to +40 °C

Operating humidity

up to 75%

Category Alarm
Sub-category Ajax Fibra (kräver certifiering)
Brand Ajax Fibra (Only Certified)
Alarm Type Magnetkontakter
Color Vit