Tech specs

LineProtect Fibra

Module to protect devices on the Fibra line from short circuit and sabotage

LineProtect Fibra


Compatible hub models


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.
  • Instant notifications.
  • Remote configuration in the Ajax apps.

Line connection

4-core cable


to any point of the Fibra line
LineProtect can be installed behind the hub, detector, keypad, or siren. The module protects devices installed on the Fibra line between LineProtect and the hub, as well as the hub itself. It does not protect devices between the module and the end of the line.

Fibra line length

up to 6,500 ft
When using the U/UTP cat.5 twisted pair cable.

Encrypted communication

Lines connection

Number of output lines

LineProtect can be installed behind any Fibra device.

Number of input lines

The number of Fibra devices connected to the output line depends on their energy consumption.

Cable length

up to 6,500 ft
When using the U/UTP cat.5 twisted pair cable.

Lines protection

Voltage supply

110/230 V~
Fuses are triggered if an abnormal voltage is supplied on the Fibra line. After that LineProtect needs to be replaced.

Short circuit on the line

Hit by the stun gun


on the Fibra signal lines
The module protects devices when voltage is supplied to A and B signal terminals.


The device distinguishes the intervention type, and the system sends the corresponding notification to the users and the security company.

Alert with a siren

The siren indicates with the buzzer and LED frame, if the output line alarm is detected.


For indoor use only. It is recommended to install it in Case that is sold separately and available in several options.

Module protection

Tamper alarm

LineProtect has a connector to fasten the tamper board to the module. The tamper board is in Case that is sold separately.

Protection against spoofing

device authentication

Lost connection detection

after 36 s
Between the hub and LineProtect. It can be changed in hub settings.

Power supply

Fibra line power supply

5.7−30 V⎓, up to 7 mA
The hub powers the module.



3.54″ × 1.97″ × 0.59″


0.99 oz

Operating temperature range

from 14°F to 104°F

Operating humidity

up to 75%

Complete set

LineProtect Fibra
Quick start guide

Additional information

Compliance with standards


24 months

User manual