AJX-FP-2RB

Overview

Ajax Wireless FireProtect 2 RB Heat Smoke CO Detector White AJX-FP-2RB
Designed for modern residential safety, the Ajax FireProtect 2 RB delivers multi-layered fire and gas detection in a compact wireless unit. It combines heat, smoke, and carbon monoxide monitoring with intelligent algorithms that reduce false alarms caused by steam or dust. Built for reliability and long-term operation, this detector integrates seamlessly into the Ajax ecosystem while also functioning as a standalone safety device. Its dual-spectrum optical sensor, chemical CO detection, and rapid-response thermistors ensure early warning in both visible and invisible fire threats.

Description

The Ajax FireProtect 2 RB (AJX-FP-2RB) is an advanced wireless detector engineered to identify smoke, heat spikes, and dangerous carbon monoxide levels with high precision. Its dual-spectrum optical sensor distinguishes real smoke from steam, while the sealed smoke chamber prevents contamination from dust and insects, eliminating the need for routine cleaning. Integrated thermistors detect rapid temperature increases, making it effective even in smokeless fire scenarios. A powerful built-in siren, long battery life of up to 7 years, and secure Jeweller communication protocol provide dependable protection and instant alerts. Suitable for homes and apartments, it ensures continuous monitoring and fast response to real threats.

Features

Reliable Detection Across Multiple Threats
This detector uses a combination of sensing technologies to deliver accurate alerts without unnecessary triggers. The dual-spectrum optical system measures airborne particles in real time, ensuring that only genuine combustion products activate alarms. Steam, humidity, and cooking fumes are filtered out through intelligent processing.

Carbon monoxide detection is handled by a dedicated chemical sensor capable of identifying low and high concentrations before symptoms appear. This adds a critical layer of protection against an otherwise undetectable hazard.

Heat detection is equally responsive, using external thermistors to identify both rapid temperature increases and critical thresholds.

Key detection capabilities include:

• Smoke recognition based on particle size analysis
• CO detection with early warning thresholds
• Heat alerts for rapid temperature rise or high ambient heat
• Minimal false alarms through advanced filtering algorithms

CO and Heat Alert Thresholds
The system is calibrated to trigger alarms at defined safety levels, ensuring timely intervention:

• CO levels at 50 ppm within 90 minutes
• CO levels at 100 ppm within 40 minutes
• CO levels at 300 ppm within 3 minutes
• Temperature rise exceeding 10 degrees C within one minute
• High temperature detection above 64 degrees C

Engineered for Long-Term Stability
The FireProtect 2 RB is built for durability and minimal maintenance. Its patented smoke chamber design prevents contamination from dust and insects, maintaining sensor accuracy over time without manual cleaning. Combined with intelligent software and efficient hardware, the detector operates reliably for years.

• Replaceable batteries with up to 7 years lifespan
• Continuous system diagnostics and self-testing
• Stable performance across changing environmental conditions

Powerful Alerts and Clear Notifications
A built-in 85 dB siren ensures alarms are clearly audible throughout the property. Distinct tones and LED indicators communicate different alert types, allowing users to quickly identify the nature of the issue.

Notification types include:

• Fire or heat detection
• Carbon monoxide warning
• Device malfunction
• Low battery status
• End-of-life indication

Smart Connectivity and Wireless Performance
Using Ajax Jeweller radio technology, the detector maintains secure and stable communication with the system hub. The protocol includes encryption, authentication, and anti-jamming protection to ensure reliable data transmission.

• Wireless range up to 1700 meters in open space
• Encrypted two-way communication
• Real-time alerts and remote configuration via mobile or desktop apps
• Automatic frequency hopping to prevent interference

System Integration and Automation
When integrated into the Ajax ecosystem, the detector enables advanced automation scenarios. In the event of an alarm, connected devices can trigger emergency lighting, shut down power circuits, or provide visual verification through compatible cameras.

The system also supports synchronized alarms, ensuring all detectors activate within seconds when a threat is detected anywhere in the building.

Installation and Everyday Use
Installation is streamlined with the SmartBracket mounting panel, allowing quick ceiling placement without disassembly. The device is ready to operate out of the box and can be configured through the Ajax app in minutes.

• Indoor use with simple mounting alignment
• Remote setup and configuration
• Manual and automatic testing options
• Maintenance-free smoke chamber design

Technical Summary
Core technical details for the AJX-FP-2RB include:

• Detection types: smoke, heat, carbon monoxide
• Sensor types: dual-spectrum optical, thermistors, chemical CO sensor
• Siren output: 85 dB at 3 meters
• Communication: Jeweller wireless protocol
• Frequency bands: region dependent
• Radio range: up to 1700 meters
• Power: 2 x CR123A batteries
• Battery life: up to 7 years
• Operating temperature: 0 to 50 degrees C
• Humidity tolerance: up to 80 percent
• Dimensions: 124 x 124 x 45 mm
• Weight: 274.5 g
• Protection rating: IP20

What Makes It a Practical Choice
The Ajax FireProtect 2 RB AJX-FP-2RB stands out for its ability to deliver accurate, multi-sensor detection without the maintenance burden common in traditional detectors. Its combination of intelligent filtering, long battery life, and secure wireless communication makes it suitable for both standalone use and integration into a larger smart security system.

Specifications

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Specifications
Product Code	AJX-FP-2RB
Communication
Jeweller communication technology	Proprietary wireless technology for transmission of alarms and events.
	Features:
	Two-way communication.
	Protection against device spoofing.
	Block encryption featuring a floating 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
	Depends on the region of sale.
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 detector and a hub (or radio signal range extender) in an open space.
	Calculate radio communication range at the facility
Encryption of radio communication	All the data stored and transmitted are protected by block encryption with a floating key.
Radio frequency hopping	To prevent radio interference and jamming.
Sensitive elements
Sensitive elements	smoke sensor
	heat sensor
	CO (carbon monoxide) sensor
Smoke detection
Sensitive element	double-spectrum optical sensor
	Recognizes smoke by the size of particles in the air.
Protection from false alarms	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 64degreesC
Temperature spike alarm	when the temperature rises more than 10degreesC in 1 minute or less
Carbon monoxide (CO) detection
Sensitive element	chemical CO sensor
Alarm if accumulated dose of CO is exceeded	more than 50 ppm (0.005%) - no more than in 90 minutes
	more than 100 ppm (0.01%) - no more than in 40 minutes
	more than 300 ppm (0.03%) - no more than in 3 minutes
	CO concentration of 400 ppm (0.04%) within 3 hours can be life-threatening. The detector stops notifying about the dangerous level of carbon monoxide when the concentration drops to 50 ppm (0.005%) within one minute.
Sensor life	10 years
	After 10 years of operation, the detector must be replaced with a new one.
Additional features
In-built siren	volume 85 dB at a distance of 3 meters
	Sound notification of alarms. Active until the reason for triggering is eliminated or until the user disables notification.
Interconnected Fire Detectors Alarms	All fire detectors in the system turn on built-in sirens if at least one of the detectors registers an alarm. An interconnected fire alarm is activated during one "hub - detector" polling interval but no more than 20 seconds later.
Learn more
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, the pressing turns off the detector sound notification.
Recommendations
Recommendations	The device is designed only for indoor installation. SmartBracket mounting panel allows adjusting the position of the detector after installation.
Anti-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 Jeweller or Jeweller/Fibra settings). The polling interval is fixed at 300 seconds.
Power supply
For FireProtect 2 RB (Heat/Smoke/CO)	2 x CR123A battery
	Up to 7 years of battery life.
Enclosure
Dimensions	124 x 124 x 45 mm
Weight	274.5 g
Operating temperature range	from 0degrees to +50degrees?
Operating humidity	up to 80%
Protection class	IP20
Colours
Colours	Black
	White
Complete set
Complete set	FireProtect 2 RB (Heat/Smoke/CO) Jeweller
	SmartBracket mounting panel
	Installation kit
	2 x CR123A battery (pre-installed)
	Quick Start Guide