AJAX 52543 Fire Protect Heat & Smoke Detector - 10 Year Sealed Battery
Accuracy through steam, dust, and time
FireProtect 2 (Heat/Smoke) Jeweller is a battery-powered fire detector designed to protect homes without false alarms. Its dustproof and insect-resistant smoke chamber, dual-spectrum optical sensor, proprietary software algorithm, and two thermistors deliver best-in-class detection accuracy. If danger is real, an 85 dB siren, two interconnection types, and instant push notifications in Ajax apps make the alarm impossible to ignore. With thoughtful design, self-monitoring, and early low battery alerts, the device ensures uninterrupted protection with fewer maintenance visits.
Smoke detection
The detector is designed to ensure accurate smoke detection over time. A dustproof and insect-resistant smoke chamber features a dual-spectrum optical sensor. It uses blue and infrared LEDs to measure the concentration of combustion products and the size of their volatile particles. The HazeFlow 2 algorithm then analyzes the collected data to distinguish smoke from false triggers, such as vapor or steam. If the analysis indicates a real fire, the detector instantly raises an alarm.
Heat detection
FireProtect 2 (Heat/Smoke) Jeweller is equipped with two A1R-class thermistors to detect smokeless fires. Positioned outside the enclosure, the thermistors immediately register if the temperature rises by 10 °C within a minute or exceeds a threshold of +64 °C. This design ensures the fastest possible response, even when a threat grows gradually.
Stable performance for a decade
FireProtect 2 (Heat/Smoke) Jeweller delivers up to 10 years of autonomous operation thanks to pre-installed batteries, sealed or replaceable. Real-time battery status is always visible in Ajax apps, so there is no need for unnecessary maintenance visits. If the battery runs low, users receive push notifications and on-site LED and sound alerts 30 days before the full discharge.
Clear alerts for faster response
In addition to LED indication, FireProtect 2 (Heat/Smoke) Jeweller features impossible-to-ignore sound alerts, thanks to a powerful 85 dB siren with distinct tones. Each indication corresponds to a specific event, drawing attention and helping users react accordingly.
Enhanced wireless interconnection
To spread an alarm across the facility as quickly as possible, FireProtect 2 (Heat/Smoke) Jeweller supports primary and fallback1 interconnection with other on-site fire detectors. The primary one operates via a hub: the detectors alert the hub to a threat, which then activates the sirens of all fire detectors on-site. The process takes just 20 seconds — three times faster than standards require. If hub communication is lost, the fallback interconnection takes over. The initiating fire detector directly communicates with other devices, raising the alarm across the system within a minute. Even in the worst-case scenario, people on-site are warned and have time to act.
Advanced automation for greater safety
While FireProtect 2 Jeweller detectors can be used as standalone devices, they gain many more capabilities within a larger Ajax system. They can interact with automation devices and MotionCam (PhOD) Jeweller detectors via scenarios, triggering automated responses to fire alarms. This interaction helps enhance home protection when people are away or speed up evacuation when they are on site.
Testimonials
Five Stars all the way for these guys!
From my initial contact with Karl all the way through to installation with Mitch and Joel DigitalSi have been fantastic. Nothing was too much trouble for these guys and and their service and product knowledge is impressive. I wouldn't hesitate to recommend DigitalSi in fact I have already to a family member and he is as equally happy and impressed as I am.
Thanks again Guys!
Continued Great support and Service
We have been using Digital SI for our camera network for many years and every time we work with them we are blown away by their excellent work and value.
Karl and his team are the best!
Since I first contacted DigitalSi, Karl and the boys have been very helpful and patient with multiple projects and properties; thank you so much. The best service and great to work with!
Great work, excellent customer service that extends past the completion of an installation
CCTV and security systems for 2 warehouses: 18 Cameras, 20 doors, 6 motion sensors + data cabling
price was competitive, all works went well, Digital SI team was always there to support
Great quick service
We would recommended to Karl and and the team at DigitalSi by our electrician. The whole experience was so easy and explained the whole way through. They were efficient and got the job done quicker than I expected and for a great price too. Highly recommend.
CCTV upgrade
The entire process was well managed from quote through to installation.
The body corporate committee is very happy with the upgraded security system at our apartment complex.
We would recommend digitalsi.
Home security installation
Six quotes were provided. Explanation for each option provided.
Pre-installation property inspection was done and scheduled installation was completed.
Effortless process. Professional and very competitive pricing. Digital Si is highly recommended. Well done.
Great Customer Service, Highly knowledgable
It was a great experience to work with Karl n DigitalSi. Karl is very professional and responsive. We are very impressed that Karl could always give us good and practical solutions to accommodate our requests.