EN54 FireProtect (Heat) Jeweller User Manual

Revision 1, Updated June 30, 2025

Product Overview

The EN54 FireProtect (Heat) Jeweller is a wireless addressable point heat detector. It complies with EN 54-5 requirements for heat detectors of classes A1, B, and C, with reaction types R and S, ensuring the detection of dangerous temperatures.

[Image: A square, black device with the AJAX logo centered on its front.]

As part of an Ajax system, the EN54 FireProtect (Heat) Jeweller communicates with control and indication equipment (CIE) via the secure Jeweller radio protocol. The communication range in open space can reach up to 1,700 meters.

EN54 FireProtect (Heat) Jeweller purchase link

Functional Elements

[Diagram: Shows the front and back of the detector, and the SmartBracket mounting panel. Labeled components include: 1. Detector front view, 2. LED indicators (green, yellow, red), 3. Hole for unlocking tool, 4. SmartBracket mounting panel, 5. Fixing points for SmartBracket, 6. Alignment sign (⬆️⬆️) on SmartBracket, 7. Battery compartment lids, 8. Lock for securing device, 9. Tamper button, 10. QR code with device ID, 11. Power button, 12. Thermistors.]

1. Detector front view: Shows the front of the detector.
2. LED indicators: Display status using green, yellow, and red lights.
3. Unlock hole: A hole for a special tool to unlock the device.
4. SmartBracket mounting panel: The panel used to attach the detector to a surface. It can be removed by inserting a tool and turning counterclockwise.
5. Fixing points: Points on the SmartBracket for attaching it to a surface.
6. Alignment sign (⬆️⬆️): A reference point on the SmartBracket for proper device alignment during mounting.
7. Battery compartment lids: Lids that cover the battery compartments, which open for battery replacement.
8. Lock: An optional mechanism to secure the device on the SmartBracket.
9. Tamper button: Triggers an alert if the device is removed from the mounting panel.
10. QR code: Contains the device ID, used for adding the device to the CIE.
11. Power button: Used to turn the device on or off.
12. Thermistors: Detect dangerous temperature changes.

Compatible CIEs and Range Extenders

The device requires an Ajax CIE with an up-to-date OS Malevich version. Check device compatibility

Operating Principle

The EN54 FireProtect (Heat) Jeweller is a wireless fire detector designed for indoor installation. It is always active and responds to fire 24/7, irrespective of the system's security mode.

Powered by pre-installed batteries, it does not require an external power supply. The detector monitors its operational state and reports any faults. It is equipped with a tamper button that activates if the device is removed from its mounting panel.

Heat Sensor

Two built-in thermistors detect rapid temperature rises or when the temperature exceeds a threshold. They trigger an alarm based on the rate of temperature increase or static temperature detection. The specific threshold, rise rate, and response time are configurable via detector settings and comply with EN 54-5 standards.

Available heat sensor modes:

A1, A1R, A1S
B, BR, BS
C, CR, CS
Fixed temperature (configurable from +45°C to +85°C, default +60°C).

Jeweller Data Transfer Protocols

Jeweller is a wireless data transfer protocol providing fast and reliable two-way communication between the CIE and devices. It is used to transmit commands, alarms, and events. Learn more

Sending Events to the Monitoring Station

An Ajax system can transmit alarms to the Ajax PRO Desktop app and monitoring stations using formats like SurGard (Contact ID), SIA (DC-09), ADEMCO 685, and other protocols.

A system with EN54 FireProtect (Heat) Jeweller can transmit the following events:

Fire alarm / recovery after the alarm.
Heat sensor hardware fault/recovery.
Battery charge status (low/OK).
Tamper alarm/recovery.
Loss/recovery of communication between the detector and the CIE.

When an alarm is received, the monitoring station operator knows precisely what happened and where. Device addressability allows sending detailed event information, including device type, name, fire zone, virtual room, and location description. Transmitted parameters may vary based on the monitoring software and communication protocol.

Selecting the Installation Site

⚠️ The detector is designed for indoor installation only.

Follow local fire safety regulations when selecting the installation site.

Consider the following parameters when choosing a location:

Jeweller signal strength.
Distance between the device and the CIE.
Presence of obstacles to radio signal transmission.

Consider placement recommendations when developing a system project. Only specialists should design and install Ajax systems. A list of recommended partners is available here.

Signal Strength

Signal strength is determined by the rate of undelivered or corrupted data packets. The Ajax app's Devices tab displays signal strength using icons:

Three bars: Excellent signal strength.
Two bars: Good signal strength.
One bar: Low signal strength; stable operation is not guaranteed.
? [No Signal]: No signal.

Note: If signal strength is excellent, the device can automatically adjust transmission power to reduce consumption and interference.

⚠️ Run the Jeweller signal strength test before final installation. The test verifies signal strength at maximum transmission power. For EN 54 compliance, three bars are required between the device and the CIE.

If the test shows one or zero bars, stable operation is not guaranteed. Relocating the detector, even by 20 cm or rotating it, can improve signal strength. If the signal remains poor, consider an Ajax radio signal range extender (coming soon).

Refer to the functionality testing section for details on running the Jeweller signal strength test.

Where Not to Install the Device

Outdoors (can lead to detector failure).
Indoors where temperature and humidity are outside permissible limits (may damage the detector).
In places with fast air circulation (e.g., near fans, vents, open windows) as this may interfere with fire detection.
Opposite objects with rapidly changing temperatures (e.g., electric/gas heaters) as this may cause false alarms.
In room corners (may interfere with fire detection).
In bathrooms, showers, or areas with rapid temperature changes (may cause false alarms).
Near lighting fixtures, decorations, or other interior items that may interfere with air circulation (may interfere with fire detection).
On surfaces that are usually warmer or colder than the rest of the premises (e.g., skylights), as temperature fluctuations may interfere with fire detection.
In places with low or unstable Jeweller signal strength (may result in losing connection to the CIE).
Closer than 1 meter to the CIE or radio signal range extender.

Installation

⚠️ Before installing EN54 FireProtect (Heat) Jeweller, ensure the optimal location is selected according to manual requirements.

Only a professional must install this device.

To Install the Device:

Remove the SmartBracket mounting panel from the device by turning it counterclockwise.
Secure the SmartBracket panel to a surface using double-sided adhesive tape or other fasteners. The ⬆️⬆️ sign on SmartBracket is for alignment purposes only.
[Image: Shows the SmartBracket panel and three Ajax devices.]
⚠️ Use double-sided adhesive tape for temporary fixation only. The device secured by adhesive tape may detach, potentially causing damage if it falls.
Add EN54 FireProtect (Heat) Jeweller to the CIE.
Place the device on the SmartBracket mounting panel.
Run the device functionality testing.
Remove the device from the mounting panel.
Attach the SmartBracket panel to the surface using the provided screws. If using other fasteners, ensure they do not damage the panel.
To secure the device with the lock, move the locking mechanism to the locked position. A special tool is required to remove the mounting panel in this case.
Place the device on the SmartBracket mounting panel.
Adjust the device position if necessary. The SmartBracket allows rotation up to 90°.

Adding to the System

⚠️ The CIE and the device must operate on the same radio frequency; otherwise, they are incompatible. Radio frequency range may vary by region. It is recommended to purchase and use Ajax devices from the same region. Verify operating radio frequencies with technical support.

Before Adding the Module:

Install an Ajax app.
Log in to your account or create a new one.
Select a space or create a new one.
Add at least one virtual room.
Add a compatible CIE to the space. Ensure the CIE is powered on and has internet access (Ethernet, Wi-Fi, or mobile network).
Check device states in the Ajax app to ensure the space is disarmed and the CIE is not updating.

⚠️ Only a PRO or space admin with configuration rights can add the device to the CIE.

Adding to the CIE:

Open an Ajax app, select a space.
Go to the Devices tab and tap "Add device".
Scan the QR code or manually enter the device ID. The QR code is located on the device under the SmartBracket mounting panel and on the packaging.
[Image: Back of the detector showing the SmartBracket mounting panel with a QR code sticker.]
Assign a name to the device.
Select a fire zone and a virtual room.
If necessary, specify the device location in the "Location" field.
Select "Add device"; a countdown will begin.
Switch on the device by holding the power button for 3 seconds.

Once added, the device appears in the CIE devices list in the Ajax app. Device state update frequency depends on Jeweller settings (36 seconds by default).

If connection fails, try again in 5 seconds. If the maximum number of devices is reached, an error notification will appear.

ℹ️ EN54 FireProtect (Heat) Jeweller works with only one CIE. When added to a new CIE, it stops sending events to the old one. The device is not automatically removed from the old CIE's list; this must be done manually via the Ajax app.

Functionality Testing

The Ajax system provides the Jeweller signal strength test to help select the optimal installation location. The test measures signal strength and stability between the CIE (or range extender) and the device via the Jeweller protocol.

To Run the Test:

Open an Ajax app, select the space with the added device.
Go to the Devices tab.
Select EN54 FireProtect (Heat) Jeweller.
Go to Settings ⚙️.
Select "Jeweller signal strength test".

Icons

Icons in the Ajax app display the states of the EN54 FireProtect (Heat) Jeweller. Check the Devices tab for details.

[Image: Screenshot of the Ajax app showing a list of devices, including EN54 FP (Heat), with various status icons.]

Icon	Meaning
[Signal bars icon]	Jeweller signal strength: Displays signal strength between the CIE/range extender and the device. Recommended value is 3 bars. Learn more
[Battery icon]	Battery charge level: Indicates the device's battery status. Learn more
[RE icon]	Operation via range extender: Indicates if the device operates via a radio signal range extender. Learn more
[Flame icon]	Rapid temperature rise: The detector has detected a rapid temperature rise.
[Thermometer icon]	Temperature threshold exceeded: The detector has detected that the temperature threshold has been exceeded.
⚠️ [Warning icon]	Fault: EN54 FireProtect (Heat) Jeweller has a fault. A list of faults is available in the device states. Fields with faults are highlighted in yellow.
❌ [Disabled icon]	Disabled: EN54 FireProtect (Heat) Jeweller is disabled.
Offline	Connection lost: The device has lost connection with the CIE, or the CIE has lost connection with the Ajax Cloud server.
Not transferred	Not transferred: The device has not been transferred to the new CIE. Learn more

States

States provide information about the device and its operating parameters. View EN54 FireProtect (Heat) Jeweller states in Ajax apps:

[Image: Screenshot of the Ajax app showing detailed states for an EN54 FP (Heat) device, including temperature, signal strength, connection status, battery, lid status, temperature threshold, and rapid temperature rise.]

To view states:

Go to the Devices tab.
Select EN54 FireProtect (Heat) Jeweller from the list.

Parameter	Meaning
Alarm	The device has detected a fire. Tapping on ℹ️ [Info] opens detailed information about the fire location. Displayed only if a fire is detected.
Data import	Displays errors during data transfer to a new CIE. Failed – the device has not been transferred to the new CIE. Learn more
Fault	The device has a fault. Tapping on ℹ️ [Info] opens the list of device faults. Displayed only if a fault is detected.
Disabled	The device or some of its functions are disabled. It does not respond to alarms or notify users/monitoring stations. Tapping on ℹ️ [Info] opens a list of disabled functions. Displayed only if the device is disabled.
Temperature	Air temperature on the premises, measured in Celsius or Fahrenheit (based on app settings). Normal state: temperature displayed in black. When temperature rises: field highlighted in red.
Jeweller signal strength	Signal strength between the device and the CIE (or range extender). Recommended value is 3 bars. Jeweller is a protocol for transmitting commands, events, and alarms.
Connection via Jeweller	Connection state via the Jeweller channel between the device and the CIE (or range extender). Online: Device connected to CIE/range extender (normal state). Offline: Device not connected to CIE/range extender. Check connection.
<Range extender name> (coming soon)	Connection state between the device and the radio signal range extender. Online: Device connected to range extender. Offline: Device not connected to range extender. Displayed if the device operates via the radio signal range extender.
Battery charge	The device's battery charge level. Three states: OK, Battery low, Error. Users and the monitoring company receive notifications when batteries need replacement. Learn more
Lid	State of the device's tamper button, responding to detachment or opening of the enclosure. Open: Device removed from SmartBracket, or integrity compromised. Check mounting. Closed: Device installed on SmartBracket; enclosure and mounting panel integrity is not compromised (normal state). Learn more
Temperature threshold	Alarm state if a temperature threshold is exceeded. Not exceeded: Normal state; detector does not detect a temperature threshold being exceeded. Alarm: Detector has detected a temperature threshold being exceeded. Field highlighted in red if exceedance is detected. Learn more
Rapid temperature rise	Alarm in case of a rapid temperature rise. Not detected: Normal state; detector does not detect a rapid temperature rise. Alarm: Detector has detected a rapid temperature rise. Field highlighted in red if detected. Learn more
Fire zone	The number and name of the fire zone assigned to the device. Displayed in SMS and event feed notifications.
Room	The name of the virtual room assigned to the device. Displayed in SMS and event feed notifications.
Location	Detailed device location description. Displayed next to the room in event feed notifications. Text can contain up to 24 Latin or Cyrillic characters.
Firmware	Device firmware version.
Device ID	The EN54 FireProtect (Heat) Jeweller ID. Also available on the QR code and packaging.
Device No.	Number of the device loop (zone).

Settings

To change EN54 FireProtect (Heat) Jeweller settings in an Ajax app:

[Image: Screenshot of the Ajax app showing the settings screen for an EN54 FP (Heat) device, listing configurable options like Name, Fire zone, Room, Location, Heat sensor mode, etc.]

Go to the Devices tab.
Select EN54 FireProtect (Heat) Jeweller from the list.
Go to Settings ⚙️.
Set the required settings.
Tap Back to save new settings.

Setting	Meaning
Name	Name of the device. Displayed in CIE device lists, SMS, and event feed notifications. Tap the text field to change the name. The name can contain up to 24 Latin or 12 Cyrillic characters.
Fire zone	Select the fire zone to which EN54 FireProtect (Heat) Jeweller is assigned. The fire zone is displayed in SMS and event feed notifications.
Room	Select the virtual room to which EN54 FireProtect (Heat) Jeweller is assigned. The room name is displayed in SMS and event feed notifications.
Location	The detailed location of the device, displayed next to the room in event feed notifications. The location text can contain up to 24 Latin or Cyrillic characters.
Heat sensor mode	Select the heat sensor mode based on the installation site: A1 A1R A1S B BR BS C CR CS Fixed temperature: Select temperature threshold from +45°C to +85°C (default +60°C).
Jeweller signal strength test	Switch the device to Jeweller signal strength test mode. This test helps verify signal strength between the CIE/range extender and the device via the Jeweller protocol to select the optimal installation site. Learn more
User guide	Open the EN54 FireProtect (Heat) Jeweller user manual in an Ajax app.
Device disablement	Option to deactivate the device. The device remains in the system but will not detect fire or raise alarms.
Delete device	Unpair, disconnect from CIE, and delete device settings.

Indication

EN54 FireProtect (Heat) Jeweller LED indicators provide information about alarms, faults, and other device states.

Event	LED Indication	Note
Alarm	The red LED lights up for 1 second, then goes off for 1 second constantly.	The device stops alarming once the fire alarm is reset. The alarm can be muted by tapping the "Silence alarm" button on the CIE touch screen or in an Ajax app.
Turning on the device	The green, yellow, and red LEDs light up in turn and then go off.	Press the power button until the green LED lights up.
Turning off the device	The green, yellow, and red LEDs light up simultaneously and then go off in reverse order.	Press the power button until the red LED goes off.
Adding to the CIE is in progress	The green LED is permanently on.	The indication turns off after the detector is added to the CIE.
The device has been removed from the CIE	The green LED flashes 6 times in a row.	The indication turns on when the detector receives information that it has been removed from the CIE.
Battery is completely discharged	The yellow LED constantly flashes.	The battery needs to be replaced.
Turning off the device when the battery is completely discharged	The green, yellow, and red LEDs light up simultaneously and then go off in reverse order.	The battery needs to be replaced.
Tamper alarm	The yellow LED lights up for 1 second.
The device is installed on the SmartBracket mounting panel	The green LED lights up for 1 second.
Performing the Jeweller signal strength test	The indication depends on the signal strength: 3 bars: the green LED lights up continuously. 2 bars: the yellow LED lights up continuously. 1 bar: the red LED lights up continuously. 0 bar: the red LED flashes rapidly.

Faults

When an EN54 FireProtect (Heat) Jeweller fault is detected, the Ajax app displays a fault counter on the device icon. All faults are indicated in the device states, with fields highlighted in yellow. Faults are also displayed in the Control tab of the CIE display. More details can be found in the Event center or Fire zones tabs of the CIE.

[Image: Screenshot of the Ajax app showing a device with a fault indicator.]

A fault of the EN54 FireProtect (Heat) Jeweller is displayed if:

The device is removed from the SmartBracket mounting panel, or its integrity is compromised (tamper button triggered).
There is no connection with the CIE or radio signal range extender (coming soon) via Jeweller.
The device battery is low.
The device has a hardware fault (failure of one or more components).

Maintenance

Regularly check the device operation. Clean the device enclosure from dust, cobwebs, and other contaminants using soft, dry wipes suitable for equipment maintenance. Do not use substances containing alcohol, acetone, gasoline, or other active solvents.

The pre-installed batteries provide up to 6 years of autonomous operation with standard Jeweller settings (36-second polling interval). The system notifies users and the monitoring company when batteries are low.

It is recommended to replace batteries immediately upon notification. Use Huiderui CR123A, 3 V, 1,600 mAh, LiMnO2 batteries.

ℹ️ Ensure batteries are installed with correct polarity (marked inside the enclosure). After replacement, run the functionality test to ensure proper operation.

How long Ajax devices operate on batteries, and what affects this

Technical Specifications

All technical specifications

Compliance with standards

Warranty

Warranty for Limited Liability Company "Ajax Systems Manufacturing" products is valid for 2 years after purchase.

If the device does not operate properly, contact Ajax Technical Support first. Most technical issues can be resolved remotely.

Warranty obligations

User agreement

Contact Technical Support:

e-mail
Telegram

Manufactured by "AS Manufacturing" LLC.

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