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Ajax EN54 FireProtect (Smoke) - 119922.275
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Ajax EN54 FireProtect (Smoke) - 119922.275

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Ajax logo Ajax
  • Black or White
  • EN54-Certified
  • 2 year guarantee

The Ajax EN54 FireProtect (Smoke) is a wireless smoke detector designed to deliver fast, reliable fire detection in compliance with the EN54 standards (Read more)

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PRODUCT DETAILS

The Ajax EN54 FireProtect (Smoke) is a wireless smoke detector designed to deliver fast, reliable fire detection in compliance with the EN54 European fire safety standard. Compact and stylish, it integrates seamlessly into the Ajax wireless ecosystem to provide dependable protection for both residential and commercial properties.

Equipped with a sensitive optical sensor, the FireProtect (Smoke) quickly identifies the presence of smoke particles, triggering an immediate alarm. Audible and visual alerts ensure occupants are notified instantly, while the device also sends real-time alerts to connected smartphones via the Ajax app and to monitoring stations when required.

EN54 FireProtect Jeweller detectors combine certified reliability with effortless installation. This wireless series includes addressable point smoke and heat detectors, some of them combined with built-in fire alarm sounders. Each detector provides best-in-class detection accuracy thanks to Ajax's patented smoke chamber with a dual-spectrum optical sensor and two accurate thermistors. With built-in communicators, long battery life, and stable radio communication, the devices are ready for different-scale projects. No need to open the enclosure or run cables — installation and configuration take just minutes via Ajax apps. Early service notifications and automated maintenance reports via Ajax PRO Desktop ensure the system stays easy to support for years.


Interface

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No. Description
1 Front panel of the detector.
2 LED indicators: green, yellow, and red.
3 Hole for a special tool used to unlock the lock.
4 SmartBracket mounting panel. To remove the panel, insert the special tool into the corresponding hole and turn SmartBracket counterclockwise. If the device is unlocked, simply turn SmartBracket counterclockwise.
5 Fixing points to attach SmartBracket to the surface.
6 ↑↑ sign on SmartBracket. You can use it as a reference point to align the device properly when attaching the mounting panel to the surface.
7 Battery compartment lids. To replace the batteries, open the lids.
8 Lock to secure the device on SmartBracket (optionally).
9 Tamper button. It triggers in case of an attempt to remove the device from the mounting panel.
10 QR code with the device ID. It is used to add the device to the CIE.
11 Power button.
12 Smoke chamber lid.



Features:

  • EN54-certified wireless smoke detector for professional fire safety
  • Optical smoke sensor ensures rapid detection of fire hazards
  • Wireless communication with Ajax Hub for remote notifications and system integration
  • Long-lasting battery life (up to 4 years) with low-battery warning
  • Tamper protection – alerts the system if the device is removed or interfered with
  • Compact, modern design suitable for residential, office, and commercial spaces
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SPECIFICATIONS
Communication
Jeweller communication technology
Proprietary wireless communication technology to transmit commands, alarms, and events.

Key features:

  • Two-way communication.
  • Advanced sabotage protection.
  • Block encryption featuring a dynamic key.
  • Instant notifications.
  • Remote control and configuration in Ajax apps.
Frequency bands
866.0–866.5 MHz
868.0–868.6 MHz
868.7–869.2 MHz
905.0–926.5 MHz
915.85–926.5 MHz
921.0–922.0 MHz
Maximum effective radiated power (ERP)
up to 20 mW
Automatic power control to reduce power consumption and radio interference.
Radio signal modulation
GFSK
Radio communication range
up to 1,700 m
Between the device and control and indicating equipment (CIE) or a range extender in an open space.
Encrypted communication
All stored and transmitted data is protected by block encryption featuring a dynamic key.
Frequency hopping
To prevent radio interference and jamming.
Smoke detection
Sensitive element
dual-spectrum optical sensor
Detects smoke based on the size of particles in the air.
False alarm protection
The device does not respond to water vapor.
Patented smoke chamber
Protects the smoke sensor from dust, dirt, and insects.
Additional features
LED indication
  • red
  • yellow
  • green
For indicating detector states: fire alarm, functionality testing, etc.
Installation recommendations
The device is designed for indoor use only.
The SmartBracket mounting panel allows the detector to be rotated up to 90° even after installation.
Sabotage protection
Tamper button
Fault notification when an attempt is made to remove the device from the mounting panel.
Lock for SmartBracket
to secure the device on the SmartBracket mounting panel
When locked, the lock secures the device and prevents it from being removed without a special tool.
Protection against spoofing
device authentication
Connection loss detection
after 36 s
Detection time depends on Jeweller settings.
Power supply
Battery
2 × CR123A
Pre-installed.
Tool-free battery replacement
To replace the batteries, open the lids of the battery compartments.
Reverse polarity protection
Prevents device damage if the batteries are put in incorrectly.
Recommended battery type
Huiderui CR123A; 3 V; 1,600 mAh, LiMnO₂
Calculated battery life
up to 5 years
Enclosure
Dimensions
124 × 124 × 48 mm
Weight
281 g
Operating temperature range
from 0 °C to +50 °C
Operating humidity
up to 80%
Protection class
IP21C
Flammability rating
UL 94 V-0
Complete set
EN54 FireProtect (Smoke) Jeweller
SmartBracket mounting panel
2 × CR123A battery (pre-installed)
Installation kit
Quick start guide
USEFUL FILES AND LINKS
Videos
No videos available
Files
  Ajax EN54 FireProtect (Smoke) Datasheet
  Ajax EN54 FireProtect (Smoke) User Manual
Links*
Ajax website
Ajax support site

* External websites provide additional content that supports the content on connectec.uk however the external Web site is subject to change and is beyond the control of Connectec Ltd. Connectec cannot guarantee the accuracy of content on external websites and does not endorse the information or products on any external websites. You will be subject to the external websites own privacy policy when you follow these links.

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