HomeSiren Fibra

Wired siren with an external LED connector


Compatible hub models Hub Hybrid (2G) Hub Hybrid (4G)

Compatible range extenders Range extenders with Fibra devices support will be soon added to the Ajax product line.


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 Ajax apps.

Learn more

Bus connection 4-core cable

Bus line length up to 6,500 ft When using the U/UTP cat.5 twisted pair. Calculate the line length at the facility

Key features

Alarm type acoustic Built-in buzzer.

Alarm volume from 81 to 105 dB at a distance of 3.3 ft Adjusted by PRO or user with admin rights in the Ajax app.

Alarm duration from 3 s to 3 min Available for HomeSiren Fibra with firmware version up to Adjusted by a PRO or user with admin rights in the Ajax app.

Siren sound frequency 3.4 ± 0.5 kHz

Additional LED connection 3 V An external LED works in parallel with the LED built into the siren and fully replicates its indication.

Chime The siren makes a special sound to notify that the opening detectors are triggered when the system is disarmed. Learn more

Events indication

  • Alerts.
  • Entry/exit delays.
  • Security mode.
  • Security mode changing.
  • After-alarm indication.


The siren is designed for indoor use only. Recommended installation height is 8.2 ft and higher.

Anti-sabotage protection

Tampering alarm Alerts of attempts to detach the siren from the surface or remove the mounting panel. Learn more

Protection against forgery Device authentication

Power supply

Fibra line power supply 24 V⎓, up to 1.8 W The siren is powered by the control panel.


Dimensions 3.56″ × 3.56″ × 1.30″

Weight 2.96 oz

Operating temperature range from 14°F to 104°F

Operating humidity up to 75%

Protection class IP50



Complete set

HomeSiren Fibra SmartBracket mounting panel Installation kit Quick Start Guide

Additional information

Compliance with standards Learn more

Warranty 24 months Learn more

User manual Learn more

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