Ajax FireProtect 2 RB Black Jeweler Wireless Smoke and Heat Detector with Advanced Sensor and Integrated Siren

Ajax FireProtect 2 RB Black Jeweler Wireless Smoke and Heat Detector with Advanced Sensor and Integrated Siren

 

52251.136.BL1 # 52251 | Ajax FireProtect 2 RB Heat/Smoke Jeweller black is an advanced wireless fire detector designed for reliable protection of residential and professional premises, thanks to the intelligent combination of smoke and heat sensors. It integrates a dual-spectrum optical sensor with HazeFlow 2 algorithm and dual A1R certified thermistors capable of detecting rapid temperature increases or critical thresholds above 64 °C. Jeweller radio communication up to 1700 m , automatic alarm interconnection , built-in 85 dB siren and continuous diagnostics with in-app notifications ensure maximum safety and control. The compact and elegant black design, quick installation with SmartBracket and power supply with replaceable batteries for up to 7 years make it a modern, efficient solution that complies with Ajax European standards.

Technical Data Sheet

Artikel-Nr.: 52251.136.BL1

Marke: Ajax Systems

Manufacturer Object ( [id] => 31 [name] => Ajax Systems [description] =>

Das 2011 gegründete Unternehmen Ajax System baut drahtlose Brand- und Alarmsysteme mit der drahtlosen JEWELLER Technologie, mit der Sie alle angeschlossenen Netzwerkgeräte sicher überwachen können. Ajax System bietet Lösungen für zu Hause, im Büro oder für kommerzielle Aktivitäten, die über eine App verwaltet werden können, immer auf dem neuesten Stand und kompatibel mit iOS- und Android-Systemen sind. Ajax-Alarmsysteme sind einfach zu installieren, in der Tat dauert es nur 15 Sekunden, um die Steuereinheit mit den Sensoren zu verbinden. Darüber hinaus können sie in Überwachungskameras integriert werden, haben eine Fehlermarge von nahezu Null und senden im Gefahrenfall in weniger als 150 Millisekunden eine Benachrichtigung (SMS, Push oder Call).

[short_description] =>

Ajax SystemsAjax Systems

Ajax-Alarmsysteme verwenden die neueste drahtlose Technologie, die alle Produkte zuverlässig und immer verbunden macht. Zusätzlich zu ihrer ausgezeichneten Leistung zeichnen sich Ajax-Alarmsysteme durch ihr modernes und elegantes Design aus.

[id_address] => [date_add] => 2019-01-15 15:51:16 [date_upd] => 2025-06-11 12:47:32 [link_rewrite] => ajax-systems [meta_title] => Feuer- und Alarmsysteme der neuesten Generation - Ajax system [meta_keywords] => sistemi allarme ajax,sicurezza ajax,allarmi ajax,ajax security system,ajax security,ajax system [meta_description] => I sistemi allarme Ajax system sono dispositivi wireless affidabili e innovativi, non producono falsi allarmi e si installano in 15 secondi. Scoprili su Setik.biz! [active] => 1 [webserviceParameters:protected] => Array ( [fields] => Array ( [active] => Array ( ) [link_rewrite] => Array ( [getter] => getLink [setter] => ) ) [associations] => Array ( [addresses] => Array ( [resource] => address [setter] => [fields] => Array ( [id] => Array ( [xlink_resource] => addresses ) ) ) ) ) [id_lang:protected] => 26 [id_shop:protected] => 1 [id_shop_list] => Array ( ) [get_shop_from_context:protected] => 1 [table:protected] => manufacturer [identifier:protected] => id_manufacturer [fieldsRequired:protected] => Array ( [0] => name ) [fieldsSize:protected] => Array ( [name] => 64 ) [fieldsValidate:protected] => Array ( [name] => isCatalogName ) [fieldsRequiredLang:protected] => Array ( ) [fieldsSizeLang:protected] => Array ( [meta_title] => 255 [meta_description] => 512 ) [fieldsValidateLang:protected] => Array ( [description] => isCleanHtml [short_description] => isCleanHtml [meta_title] => isGenericName [meta_description] => isGenericName [meta_keywords] => isGenericName ) [tables:protected] => Array ( ) [image_dir:protected] => /var/www/html/img/m/ [image_format:protected] => jpg [translator:protected] => [def:protected] => Array ( [table] => manufacturer [primary] => id_manufacturer [multilang] => 1 [fields] => Array ( [name] => Array ( [type] => 3 [validate] => isCatalogName [required] => 1 [size] => 64 ) [active] => Array ( [type] => 2 ) [date_add] => Array ( [type] => 5 ) [date_upd] => Array ( [type] => 5 ) [description] => Array ( [type] => 6 [lang] => 1 [validate] => isCleanHtml ) [short_description] => Array ( [type] => 6 [lang] => 1 [validate] => isCleanHtml ) [meta_title] => Array ( [type] => 3 [lang] => 1 [validate] => isGenericName [size] => 255 ) [meta_description] => Array ( [type] => 3 [lang] => 1 [validate] => isGenericName [size] => 512 ) [meta_keywords] => Array ( [type] => 3 [lang] => 1 [validate] => isGenericName ) ) [classname] => Manufacturer [associations] => Array ( [l] => Array ( [type] => 2 [field] => id_manufacturer [foreign_field] => id_manufacturer ) ) ) [update_fields:protected] => [force_id] => ) 1
INSTALLATEUR FINDEN

KOSTENLOSES TVCC-SCHILD!×

Mit allen >> AJAX KITS

TOTALER AUSVERKAUF ×

 CLEARANCE SALE! 
Take advantage of our must-see outing offers.
  Discover the promo >> 

52251.136.BL1 | WIRELESS HEAT AND SMOKE DETECTOR WITH REPLACEABLE BATTERIES

Ajax

The Ajax FireProtect 2 RB Heat/Smoke Jeweler, 52251.136.BL1, black, is a next-generation wireless fire detector designed to provide comprehensive and reliable protection against fires and overheating in residential and commercial environments. Thanks to the combination of intelligent sensors and advanced radio communication, it ensures rapid and accurate detection of smoke and abnormal temperature changes, minimizing false alarms. Integration with the Ajax system allows remote management via app, automatic activation of security scenarios, and instant alarm interconnection, providing constant control and a high level of security. The compact and elegant black design makes it discreet and suitable for any context, while quick installation and the long battery life of replaceable batteries complete a reliable solution that complies with European standards.

Main specifications:

- Dual-spectrum optical sensor with HazeFlow 2 algorithm for accurate smoke detection

- Heat sensors with dual A1R thermistors to detect rapid temperature increases and critical thresholds above 64°C

- Jeweller radio communication up to 1700 m for stable and secure connections

- Automatic alarm interconnection with integrated 85 dB siren

- Real-time management and notifications via Ajax app with continuous diagnostics

- Replaceable batteries with up to 7 years of battery life and quick installation with SmartBracket

Further details

✅ Jeweler Communication:
It uses encrypted two-way Jeweller radio technology, designed to ensure stable and secure transmission of events up to 1700 meters in open field, with constant monitoring of the device status and immediate notifications in case of alarm or signal loss .
✅ Sensor type:
It integrates an advanced combination of dual-spectrum optical smoke sensor and professional heat sensors, designed to work synergistically and provide reliable fire detection in various environmental conditions.
✅ Smoke Detection:
The dual-spectrum optical sensor, supported by the intelligent HazeFlow 2 algorithm, effectively distinguishes real smoke from water vapor and dust, reducing false alarms and ensuring timely warning in the event of a fire outbreak.
✅ Dangerous temperature detection:
The A1R certified dual thermistors quickly detect abnormal temperature increases, activating the alarm both in the event of a sudden increase of 10°C in one minute and when the critical threshold of 64°C is exceeded, even in the absence of smoke.
✅ Additional features :
It supports automatic interconnection between detectors, activation of automation scenarios, built-in 85 dB siren, push and SMS notifications, and continuous diagnostics via the Ajax app for complete system control.
✅ Anti-sabotage protection :
It is equipped with anti-tampering systems that detect opening and unauthorized removal, as well as constant monitoring of the device's status, ensuring a high level of security against sabotage attempts.
✅ Power supply:
Powered by replaceable CR123A batteries, it ensures up to 7 years of battery life, reducing the need for maintenance and ensuring operational continuity even in the absence of mains power.

Technical data sheet

52251.136.BL1
Communication
Jeweler communication technology Proprietary wireless communication technology to transmit commands, alarms, and events.
Key features:
  • Two-way communication.
  • Advanced anti-sabotage.
  • Block encryption featuring a dynamic key.
  • Instant notifications.
  • Remote configuration via the Ajax apps.
Radio 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
Depence on the sales reaction
Maximum effective radiated power (ERP) up to 20 mW
Automatic power control to reduce power consumption and radio interference.
Radio signal modulation GFSK
Radio signal range Up to 1,700 m
up to 5,500 ft
Between the detector and a hub (or radio signal range extender) in an open space.
Encrypted radio communication All the data stored and transmitted are protected by block encryption featuring a dynamic key.
Frequency hopping To prevent radio interference and jamming
Sensitive elements smoke sensor
CO (carbon monoxide) sensor
Smoke detection
Sensitive element double-spectrum optical sensor
Recognizes smoke by the size of particles in the air
False alarm prevention Does not react to water vapor.
Patented smoke chamber Protects the smoke sensor from dust, dirt, and insects
Dangerous temperature detection
Sensitive element according to the requirements for Class A1R heat detectors Requirements of EN 54-5 and BS 5446-2 standards
High temperature alarm at temperatures above 64 °C
at temperatures above 147 °F
Temperature spike alarm when the temperature rises more than 10°C 50°F in 1 minute or less
Additional features
Built-in siren 85 dB volume at a distance of 3 meters
85 dB volume at a distance of 9 ft
Sound notification of alarms. Active until the reason for triggering is eliminated or until the user disables the notification.
Interconnected fire detectors alarm via primary interconnection
If one of the fire detectors in the system detects a threat, it sends an alarm to the hub. Within 20 seconds, the hub initiates an interconnected alarm and sends data to Ajax apps.
via fallback interconnection1
At the same time with notifying the hub, the initiating detector sends an alarm directly to other detectors. All connected detectors activate the buzzer within a minute. It will work even in the worst-case scenario of losing connection with the hub.
1 Fallback interconnected alarm is available only for FireProtect 2 detectors with firmware version 5.59.2.ХХ or later. Devices that support the fallback interconnected alarm are marked on the package with a “Fallback interconnect supported” label.
LED indication green is a power indication
A LED indicator on the device enclosure lights up once every 56 seconds. The indication meets the requirements of EN 50291
yellow is an indication of malfunctions
A LED indicator on the device enclosure lights up when malfunctions are detected. For example, in the case of discharged batteries, contamination of the smoke chamber, or end of the service life
red is an indication of fire alarms
A LED indicator on the device enclosure lights up when the detector registers a fire alarm
Button on the front panel of the detector In normal mode, when pressed, it starts the smoke chamber test. In the event of an alarm or malfunction, pressing turns off the detector sound notification.
Recommendations The device is designed only for indoor installation
SmartBracket mounting panel allows adjusting the position of the detector after installation.
Sabotage protection
Tampering alarm Alerts of attempts to detach the detector from the surface or remove the mounting panel.
Protection against spoofing device authentication
Detection of communication failure within 15 minutes
The time to detect communication loss depends on the settings for the number of undelivered data packages (specified in the Jeweler or Jeweller/Fibra settings). The polling interval is fixed at 300 seconds.
Power supply
For FireProtect 2 RB (Heat/Smoke) 2 × CR123A batteries
Up to 7 years of battery life.
Enclosure
Color Black
Dimension 124 × 124 × 45 mm
4.88″ × 4.88″ × 1.77″
Weight 272 g
9.59 oz
Operating temperature range from 0 °C to +50 °C
from 32°F to 122°F
Operating humidity up to 80%
Protection class IP20
Complete set FireProtect 2 RB (Heat/Smoke) Jeweller
SmartBracket mounting panel
Installation kit
2 × CR123A battery (pre-installed)
Quick start guide
Warranty 24 months
All our products are in conformity with the in force CE normative (read here). To ask for a copy of the certification fill out this form