Ajax EN54 Fire Detection (Heat/Sounder) White

• 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.
• Two built-in thermistors detect a rapid temperature rise or threshold exceedance. They trigger an alarm when a rapid temperature increase or static temperature is detected. Heat detector modes — A1, A1R, A1S, B, BR, BS, C, CR, CS, or a fixed temperature2 — can be selected in an Ajax app.
• This approach ensures fast and accurate detection of flaming fires or heat build-up caused by smoldering, which is critical for timely response.

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.

Dangerous temperature detection

• Sensitive element : 2 × thermistor / According to the EN 54-5 requirements for heat detectors of Class A1, B, and C with rate-of-rise (R) and static (S) response types.
• Heat sensor modes : A1, A1R, A1S / B, BR, BS / C, CR, CS / Fixed temperature / For better detection of fire hazards, depending on the installation site of the device. Can be selected in the device settings. Only the following heat sensor modes are compliant with EN 54 requirements: A1R, A1S, BR, BS, CR, and CS.

Alarm annunciation

• Alarm type : acoustic
• Sound volume : up to 95 dB at a distance of 1 m / Adjusted by a PRO or user with admin rights in an Ajax app.
• Sound pattern : 32 tones
• Sound synchronization : An audible alarm is automatically synchronized on all devices with a sounder connected to the same CIE.
• Alarm annunciation test : An audible alarm check to ensure the fire alarm is clearly audible on the premises.

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 : 278 g
• Operating temperature range : from 0 °C to +50 °C
• Operating humidity : up to 80%
• Protection class : IP21C
• Flammability rating : UL 94 V-0
• Color : White

Complete set

• EN54 FireProtect (Heat/Sounder) Jeweller
• SmartBracket mounting panel
• 2 × CR123A battery (pre-installed)
• Installation kit
• Quick start guide
• Revision : 2