Tech specs

MultiTransmitter Fibra

Wired module to integrate wired third-party detectors and devices

MultiTransmitter Fibra



Fibra communication technology

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

Line connection

4-core cable

Fibra line length

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

Encrypted communication

Wired devices connection

Number of zones

18 wired zones
Multiple devices can be connected to one zone. The number of connected devices depends on their power consumption.

Type of connection

With EOL resistance from 1 kΩ to 30 kΩ with 100 Ω increment.

Cable length

up to 1,300 ft
When using a copper signal cable with a 0.00034 sq. in cross-sectional area of the conductor.

Operation mode

pulse, bistable

Event types

15 event types of wired devices
  • Tamper alarm
  • Intrusion
  • Fire
  • Auxiliary alarm
  • Panic button
  • Gas alarm
  • Malfunction
  • Leakage
  • Glass break
  • High temperature
  • Low temperature
  • Masking
  • Duress code (opening)
  • Vibration (seismic sensor)
  • Custom
Adjusted by a PRO or a user with admin rights in the Ajax app.


The device is powered from the 100–240 V~ mains and designed for indoor use only.

Anti-sabotage protection

Tampering alarm

Two tampers to detect the lid opening and alert about detachment from the wall.

Protection against forgery

Device authentication

Communication loss detection

within 36 seconds
Between hub and MultiTransmitter Fibra.

Instant detection of wired connection loss, short circuits and malfunctions

when using 2EOL/3EOL connection
Depends on the connection type.

Power supply


100–240 V~


12 V⎓, up to 7 Ah capacity with a full charge cycle of up to 30 hours


type A
Used inside the supervised premises.

Operating AC voltage range

100–240 V~, 50/60 Hz
Main power supply.

Operating DC voltage range

10.5–15 V⎓
Backup power supply.

Quiescent current consumption at nominal voltage

25 mA*

Maximum current consumption at nominal voltage

30 mA*
* From the backup battery after the loss of the main power supply.

Backup battery capacity

up to 7 Ah with a full charge cycle of up to 30 hours**
When using a 4 Ah battery, the minimum operating time at a maximum load of 1.7 А is 2 hours. For autonomous operation for 12 or 24 hours, the maximum load should not exceed 0.3 A and 0.15 A, respectively.

When using a 7 Ah battery, the minimum operating time at a maximum load of 1.7 А is 4 hours. For autonomous operation for 12 or 24 hours, the maximum load should not exceed 0.4 A and 0.2 A, respectively.

** Maximum time to recharge a 7 Ah battery to 80% of its capacity.

Power supply of connected wired devices

10.5–15 V⎓, up to 1 A (total maximum current consumption)
Three power supply lines from MultiTransmitter Fibra.

Power supply of connected fire detectors

10.5–15 V⎓, up to 0.4 A
One power supply line from MultiTransmitter Fibra.

Low battery voltage

11.6 V⎓

Low battery recovery voltage

12.6 V⎓

End-of-life battery voltage

10.5 V⎓

Maximum output peak-to-peak ripple battery voltage

200 mV⎓

Minimum backup battery energy level in the charged state




7.56″ × 9.37″ × 3.94″


28.15 oz
Excluding the backup battery.

Operating temperature range

from 14°F to 104°F

Operating humidity

up to 75%

Protection class

The new casing version of MultiTransmitter Fibra has light guides for the integration module LED indication, while the previous version has the LED indicator on the board.



Complete set

MultiTransmitter Fibra
Power cable
Screw terminal block adapter (for INCERT compliance only)
12 V battery connection cable
Installation kit
Quick start guide

Additional information

Compliance with standards


24 months

User manual