Tech specs

FireProtect Plus Jeweller

Wireless fire detector with heat, smoke, and CO sensors. Version with replaceable batteries

FireProtect Plus Jeweller

Devices compatibility

Devices compatibility


Jeweller 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 control and configuration in Ajax apps.

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 sales region.

Maximum effective radiated power (ERP)

up to 20 mW

Automatic power control to reduce power consumption and radio interference.

Radio signal modulation


Radio communication range

up to 4,200 ft

Between the device and a hub (or a range extender) in an open space.

Encrypted communication

All stored and transmitted data are protected by block encryption featuring a dynamic key.

Frequency hopping

To prevent radio interference and jamming.

Sensitive elements

Smoke sensor
Heat sensor
CO (carbon monoxide) sensor

Smoke detection

Sensitive element

photoelectric sensor

False alarm prevention

The HazeFlow software algorithm checks for smoke before activating the alarm. The system will ignore the first triggering and raise an alarm if the device detects the smoke again after 30 seconds during the second check.

Dangerous temperature detection

Sensitive element


High temperature alarm

at temperatures above 140 °F

Temperature spike alarm

when the temperature rises more than 86 °F in 30 minutes or less

Carbon monoxide (CO) detection

Sensitive element

chemical CO sensor

Alarm by exceeding CO level

30 ppm (0.003%) — in 120 minutes and more
50 ppm (0.005%) — in 60–89 minutes
100 ppm (0.01%) — in 10–39 minutes
300 ppm (0.03%) — 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 40 ppm (0.004%) within 1 minute.

Sensor service life

7 years

After 7 years of operation, the detector must be replaced with a new one.

Additional features

Built-in siren

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

All fire detectors in the system turn on built-in sirens if at least one detector registers an alarm. An interconnected fire detectors alarm is activated within one “hub–detector” polling interval.


  • LED
  • sound

The indication shows the detector status and alarms.

Touch button on the detector’s front panel

In normal mode, pressing the button starts the smoke chamber test. In the case of an alarm or malfunction, pressing the button turns off the detector sound notification.


The device is designed for indoor use only.

Sabotage protection

Tamper alarm

Notifications of attempts to detach the detector from the surface or remove it from the mounting panel.

Protection against spoofing

device authentication

Communication loss detection

after 36 s

Detection time depends on the Jeweller or Jeweller/Fibra settings.

Power supply


2 × CR2 (pre-installed)

The main power supply. Up to 4 years of battery life.

CR2032 (pre-installed)

The backup power supply.



5.2″ × 5.2″ × 1.22″


7.76 oz

Operating temperature range

from 32 °F to 149 °F

Operating humidity

up to 80%

Protection class





Complete set

FireProtect Plus Jeweller

SmartBracket mounting panel

Installation kit

2 × CR2 battery (pre-installed)

CR2032 backup battery (pre-installed)

Quick start guide

Additional information

Compliance with standards

Learn more


24 months

Learn more