Ajax FireProtect 2 AC (Heat/CO) Jeweller in White

FAQs

What is the FireProtect 2 AC (Heat/CO) Jeweller?

The FireProtect 2 AC (Heat/CO) Jeweller is a wireless mains-powered fire detector with a backup battery and built-in siren. It’s designed for indoor installation and detects both temperature rise and dangerous CO (carbon monoxide) levels. The detector operates as part of the Ajax system, communicating with the hub via secure Jeweller radio protocol.

What area does one detector cover?

The coverage area of one FireProtect 2 AC (Heat/CO) detector is 50 to 60 m², depending on the type of premises. The detector should be installed in every room for optimal protection.

How does the heat detection work?

The detector uses two built-in class A1R thermistors that detect rapid temperature rise and exceeding temperature thresholds. It reports temperature threshold exceeding when the value exceeds +64°C. The detector also reports a rapid temperature rise if the temperature increases by 10°C within one minute, or alerts immediately if the temperature rises sharply by 20°C or more.

At what CO levels does the detector alarm?

The detector raises a CO alarm at the following levels:

• 50 ppm (0.005%) and above — within 90 minutes max

• 100 ppm (0.01%) and above — within 40 minutes max

• 300 ppm (0.03%) and above — within 3 minutes max

The detector stops warning when the CO concentration drops to 40 ppm (0.004%).

What power supply does the detector require?

The detector operates from a 110-240 V~, 50/60 Hz power supply and has a built-in backup battery (1 x CR 2/3 AA sealed battery). The mains power consumption is up to 2W. Even during a power outage, the detector continues to operate using the backup battery.

How long does the backup battery last?

The backup battery has a 10-year lifespan when the Battery Life Optimization feature is enabled. After a low battery notification, the detector can operate for another month under normal conditions before the battery needs replacement.

What is the wireless communication range?

The detector communicates with the Ajax hub via the Jeweller protocol with a range of up to 1,700 meters in open space without obstacles. The range can be extended up to twice as much using a radio signal range extender.

Can the detector work without a hub?

Yes, the detector can operate autonomously without connecting to an Ajax hub. In autonomous mode, it notifies of fire or dangerous CO levels using only the built-in siren and LED indication. However, users won’t receive notifications on Ajax apps in this mode.

What is the Interconnected Fire Detectors Alarm feature?

All FireProtect 2 AC detectors in the system can synchronously notify about fire alarms through two methods: primary (via Ajax hub) and fallback (detector-to-detector). When danger is detected, the hub activates the primary interconnection in 20 seconds. Meanwhile, the initiating detector activates fallback interconnection directly with other detectors. Even if connection with the hub is lost, the interconnected alarm takes only a minute.

Where should I install the detector?

Install the detector on the ceiling in the center of the room, at least 30 cm away from light fixtures, chandeliers, or decorative objects. For sloping ceilings, install 60 cm from the top point. In halls or narrow corridors, detectors should be no more than 7.5 meters apart. Wall mounting is possible but only 15-30 cm below the ceiling and above doorways, with LEDs visible to users.

Where should I NOT install the detector?

Avoid installing the detector:

• Outdoors or in areas with temperature/humidity outside permissible limits (0°C to +50°C, up to 80% humidity)

• Near fast air circulation (fans, vents, open windows)

• Opposite objects with rapidly changing temperatures (heaters)

• In corners, bathrooms, or areas with rapid temperature changes

• Near lighting fixtures or decorative items that may interfere with air circulation

How do I test the detector?

You can test the detector in two ways: by pressing the Test/Mute button on the center of the front panel for 1.5 seconds, or through the Ajax app. Wait at least 3 minutes after turning on the detector before running a test. During testing, the red LED flashes 5 times then 3 more times slower, accompanied by siren sounds.

How do I add the detector to my Ajax system?

To add the detector: 1) Install the Ajax app and create an account, 2) Add a compatible hub to your space, 3) In the app, go to Devices tab and click “Add device”, 4) Name the detector and scan the QR code (located on the detector and package), 5) Select a room and group, 6) Turn on the detector by holding the power button for 3 seconds.

What should I do if there’s a fire alarm?

NEVER IGNORE THE ALARM! Always assume it’s real and evacuate immediately. Don’t open doors if you feel heat or smoke behind them. If heavy smoke enters a room, stay close to the floor and crawl out, breathing through a wet cloth if possible. Evacuate quickly without packing belongings, arrange a meeting place outside, ensure everyone has evacuated safely, and call the fire department immediately.

What should I do if there’s a CO alarm?

NEVER IGNORE THE ALARM! Immediately open all doors and windows for ventilation if safe to do so. Stop using and turn off all fuel devices where possible. Evacuate from the premises leaving doors and windows open. If you have headache and nausea, get medical help immediately as these could be signs of carbon monoxide poisoning. Call your gas supplier’s hotline and avoid re-entering until the alarm stops.

How often should I maintain the detector?

The detector has a self-test system and generally doesn’t require routine maintenance. However, test the detector periodically (monthly recommended, or as required by local regulations). Clean the enclosure of dust and contaminants using a soft dry cloth. Do not use alcohol, acetone, gasoline, or other active solvents.

What is the lifespan of the detector?

The service life of the detector is 10 years. After this period, the sensitivity of the sensors may decrease, and the detector should be replaced with a new one to ensure uninterrupted fire protection. The detector will indicate when its service life has expired.

What hubs are compatible with this detector?

The detector is compatible only with Ajax hubs with firmware OS Malevich 2.18 and later. Hub (4G) Jeweller must have OS Malevich 2.28 or later. Check device compatibility using the Ajax compatibility tool before purchasing.

Can I mute the alarm?

Yes, you can mute alarms by pressing the Test/Mute button or through the Ajax app for 10 minutes. However, CO alarms cannot be muted if the CO level exceeds 300 ppm. For fault conditions, low battery, or end of life indications, muting lasts for 12 hours. The alarm will resume if the source is still present after the muting period expires.