Ajax FireProtect2 SB (Heat/Smoke) - 49559.149.WH1
Ajax
- Dual-Tech Detection
- Built-in Siren
- 2 year guarantee
The Ajax FireProtect 2 SB (Heat/Smoke) is a wireless fire detector that combines optical smoke detection and heat sensing for reliable fire detection. (Read more)
PRODUCT DETAILS
The Ajax FireProtect 2 SB (Heat/Smoke) is an advanced wireless fire detector that combines optical smoke detection and heat sensing to deliver rapid and reliable fire detection in residential and commercial environments. Designed for safety, simplicity, and long-term performance, it uses Ajax’s secure Jeweller radio protocol to provide stable communication and instant alerts to users and monitoring stations.
With a built-in sealed battery offering up to 10 years of operation, the FireProtect 2 SB provides maintenance-free fire protection with both audible and visual alarms. It meets the requirements of EN 14604 and EN 54-5 standards, ensuring compliance for smoke and heat detection applications.
Patented smoke chamber technology
Encouraged by world standards and best practices, Ajax reaches an entirely new level of technology in residential fire safety with FireProtect 2. A unique smoke chamber that is dustproof and impenetrable for insects, a dual-spectrum optical sensor, and a proprietary HazeFlow 2 software algorithm guarantee the speed and accuracy of fire detection — ultimate safety with no stress about false alarms.
The smoke chamber is hardwired with a dual-spectrum optical sensor that has blue and infrared LEDs with different wavelengths. It uses the most reliable real-time detection method, directly measuring the microparticle concentration in the air. This technology allows FireProtect 2 to determine the size of the volatile particles inside the chamber and respond only to smoke, ignoring vapour and water steam.
The Ajax smart and complex ecosystem brings new standards to the fire safety industry. FireProtect 2 is ready to protect your home without an Ajax hub but can do even more when connected to it. Intuitive Ajax apps provide remote setup and all detector information in real-time from anywhere the Internet is available, on a smartphone or PC. With instant notifications, there is no chance of missing a fire alert, and scenarios let you automate fire security to enhance home protection while you’re away. A complete set with stable wireless communication — essential reliability tested over the years by nearly two million users.
Interface
| No. | Description |
|---|---|
| 1 | The front panel of the detector with a
Test/Mute button. To activate the button, press the central part of
the panel. |
| 2 | SmartBracket mounting panel. To take
off the panel, turn it counterclockwise |
| 3 | Device QR code and ID (serial number).
Used for detector connection to the Ajax system |
| 4 | Tamper button. Triggers when trying to
tear the detector off from the surface or to take it off the
mounting panel |
| 5 | Detector certification
information |
| 6 | Power button |
| No. | Description |
|---|---|
| 7 | First thermistor. Detects dangerous
temperatures |
| 8 | Green LED indicator |
| 9 | Yellow LED indicator |
| 10 | Red LED indicator |
| 11 | Siren |
| 12 | Second thermistor. Detects dangerous
temperature |
| 13 | Smoke chamber lid |
Features:
- Dual detection technology – optical sensor for smoke and thermistor for rapid heat detection
- Sealed 10-year battery – no replacement needed throughout the device’s lifespan
- Built-in siren (85 dB at 3 m) – provides an immediate local alarm
- Jeweller wireless communication – up to 1,700 m range (line-of-sight) for reliable system connectivity
- Heat detection – triggers alarm when temperature exceeds +64°C or rises sharply
- Optical smoke sensor – uses a labyrinth chamber and blue LED technology to detect smoke particles quickly
- LED indicators – show power, alarm, and fault statuses clearly
- Self-testing function – automatically checks sensor functionality and communication health
- Easy installation – mounts in minutes using the SmartBracket plate
- Compliance – meets EN 14604 (smoke) and EN 54-5 (heat) standards for fire safety
| 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 |
| 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. |
| 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 |
| 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 64°C |
| Temperature spike alarm |
when the temperature rises more than 10°C in 1 minute or
less |
| 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 |
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 interconnection 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. |
| 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 |
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) |
2 × CR123A battery Up to 7 years of battery life. |
| Enclosure |
|
| Dimensions |
124 × 124 × 45 mm |
| Weight |
272 g |
| Operating temperature range |
from 0°С to +50°С |
| 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 |
| Videos |
|---|
| No videos available |
| Files |
|---|
| Ajax FireProtect2 SB Datasheet |
| Ajax FireProtect2 SB 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.
Get expert answers to questions specific to this product below or for more help visit our Q&A forum
Be the first to ask a question and help others interested in this product
Read customer reviews or submit your review of this product
Your feedback helps us improve our products and services as well as helping other users make informed buying decisions.
There are no reviews for this product.
Why buy from Connectec?
SUPPORT
Our technical support team are experienced professionals with strong product knowledge and project expertise.
SERVICE
Customer service is our top priority. We’re committed to providing first-class support to every customer.
DELIVERY
We offer FREE mainland UK delivery on orders over £75 and FREE next day delivery on orders over £150*.
PARTNERS
We are approved distributors, offering direct access to full manufacturer warranties and support.
* Qualifying products only, subject to terms. For more information view our delivery information.
