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EN54 I/O Module (2X2).
Wireless addressable module with two inputs and two outputs for a fire alarm system
Standards and certifications
EN54 I/O Module (2X2) Jeweller · IOM.54.J. Manufacturer-listed marks; regional and installation conditions apply.
* Ajax shows these marks for the EN54 I/O Module (2X2) Jeweller range. Check the linked documentation for the exact version and market.
Connect the signal to the response.
EN54 I/O Module (2X2) Jeweller brings two wired inputs and two independent relay outputs into the Ajax fire system. Receive signals from external equipment and configure the required response through Ajax apps. The battery-powered module communicates wirelessly with the fire panel; connected equipment uses its own power supply.
Key features. At a glance.
Configuration and testing in Ajax apps
on-site or remotely
2 galvanically isolated outputs
each supporting AC or DC
2 inputs
supporting NC, NO, EOL, 2EOL, and 3EOL connection types
Hassle-free installation
with the bundled SmartBracket mounting panel and in-app setup
5 years of operation
with pre-installed CR123A batteries and no external power supply
Built-in Jeweller communication1
up to 1,700 m of wireless communication range with the CIE or range extender
Thoughtful design
for cable routing from the back, sides, top, or bottom
Numerous event types
for connected devices
Damage prevention
with a protective housing for the module board
Compact size
2 tamper buttons
to detect device dismantling
Informative push notifications
- 1In open space.
Ajax product information ↗ · EN54 I/O Module (2X2) Jeweller specifications ↗
EN54 I/O Module (2X2) Jeweller
Every detail has a purpose.
Explore the function, installation and system requirements of EN54 I/O Module (2X2) Jeweller.
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Bring wired signals into the fire system.
Two configurable inputs
Connect equipment with potential-free dry contacts, such as beam smoke detectors, flow switches or control panels. NC, NO, EOL, 2EOL and 3EOL connections are supported; 3EOL can distinguish three signals from one connected device.
Set each input’s event type, normal state and resistance values in Ajax apps. Connected equipment requiring power needs its own supply. Each connected device occupies a slot in the fire panel’s device limit.
Control the planned emergency response.
Two independent relay outputs
Potential-free, galvanically isolated contacts can operate suitable door release, ventilation, lighting or alert equipment. Configure the required normal state and automation response, or control an output from Ajax apps or the fire panel.
- AC: 10–250 V, from 5 mA to 10 A with a resistive load.
- DC: 10–30 V, from 5 mA to 5 A with a resistive load.
- Outputs switch a separately supplied circuit; they do not supply power.
The AC rating must not be applied to DC or assumed for inductive loads. Verify the external equipment and its interface in the project design.
Define what happens during a fault.
Optional fail-safe behaviour
With Fail-safe mode enabled, the module activates connected output devices if it goes offline, runs out of battery or has a hardware fault. They remain activated until the fault is resolved.
Choose the contact state and fail-safe setting for the connected equipment’s required response. Test a fault as well as an alarm before handover.
A supervised link to the fire panel.
Jeweller, built in
Two-way Jeweller radio carries commands, alarms and device states to the compatible fire panel. Encryption, authentication and frequency hopping protect the link without a separate radio module.
Up to 1,700 m is an open-space figure. Walls and the installation layout reduce usable range. EN54 Fire ReX can extend the route; survey each link at its final position. Alarm delivery and connection-loss timing depend on the system and its settings.
Independent module power.
Two replaceable CR123A batteries
The module runs on two pre-installed batteries without an external supply. Ajax states up to five years with the standard 36-second polling interval; use and conditions affect actual service life.
The module cannot power connected devices. Replace depleted batteries promptly and run the functional test after replacement.
Keep the circuit and device state in view.
Useful events for the responsible team
Choose fire, gas, evacuation, device fault or another supported input event. EOL supervision can report cable breaks, short circuits and faults according to the selected connection type.
Custom input events are not sent to the monitoring software. Verify the received event codes and locations; tamper, battery and radio faults are supervised separately.
Controlled access with a fireman key switch.
An optional authorised-access input
A compatible third-party fireman key switch with dry contacts can grant access level 2 when activated and restrict access again when released. A linked access code can identify the responsible user.
Requires EN54 Fire Hub with OS Malevich 2.40 or later and supported apps: mobile Security System 3.48, mobile PRO 2.48, or Desktop/PRO Desktop 5.48 or later. Configure Fire panel login for the wired input and test both key positions.
Connect, configure and commission.
Add the module and its wired devices
Scan the module QR code, assign the fire zone, room and location, then add the connected inputs and configure the outputs. Confirm the panel’s device capacity.
Use a compatible fire CIE with current software and the matching radio region; an ordinary intrusion hub is not a substitute.
Find the right fire I/O module.
Compare how EN54 and Type4 modules bring wired signals into the fire system and switch the planned response. Each has two inputs and two isolated relay outputs.
Compare fire I/O modules →Every detail, in one place.
Communication
- Jeweller communication technology
- Two-way system communication for the functions specified for this model.
- Radio communication range
- up to 1,700 m Between the device and a control and indicating equipment (CIE) or a range extender in an open space.
- Encrypted communication
- Encrypted device communication.
- Frequency hopping
- To prevent radio interference and jamming.
Inputs
- Number of input lines for third-party devices
- 2
- Input terminals
- Input 1, Input 2 — inputs for connecting third-party wired devices.; Shield — common input for connecting shields of the cables that connect third-party wired devices.
- Type of connection
- NO, NC, EOL, 2EOL, 3EOL
- EOL resistance
- 0.47 kΩ, 1.2 kΩ, 2.7 kΩ, and 6.2 kΩ resistors Four resistors for each input are included in the complete set.
- Length of wired connection to third-party devices
- up to 100 m When 2×1.5 mm2 (16 AWG) fire-resistant cable is used.
- Cross-sectional area of the cable
- 0.4–2.5 mm² (21–13 AWG)
Outputs
- Number of output lines for third-party devices
- 2
- Output terminals
- Output 1, Output 2 — relay outputs for connecting third-party wired devices.
- AC operating range
- 10—250 V~, 5 mA to 10 A (resistive load)
- DC operating range
- 10—30 V⎓, 5 mA to 5 A (resistive load)
- Cross-sectional area of the cable
- 0.4–2.5 mm² (21–13 AWG)
Key features
- Event types
- An Ajax app specifies event types for wired device inputs. The selected type determines the text of alarm notifications and events of the connected device, as well as event codes transmitted to the CMS. A PRO or a user with admin rights can configure the event type in an Ajax app.
- Fail-safe mode
- If the module is offline, discharged, or has hardware problems, it activates the connected devices automatically.
Sabotage protection
- Tamper alarm
- Notifications of attempts to detach the module from the surface or open the front lid.
- Protection against spoofing
- device authentication
- Connection loss detection
- after 36 s Detection time depends on Jeweller settings.
- Input monitoring
- detection of wired connection loss, short circuits, and malfunctions when the EOL, 2EOL, or 3EOL connection is used Depends on the connection type.
Power supply
- Battery
- 2 × CR123A Pre-installed.
- Calculated battery life
- up to 5 years
Casing
- Dimensions
- 116 × 180 × 62 mm
- Weight
- 547 g
- Operating temperature range
- from 0 °C to +50 °C
- Operating humidity
- up to 80%
- Protection class
- IP21C
- Flammability rating
- UL 94 V-0
Revision
- Revision
- 1
What’s in the box
- EN54 I/O Module (2X2) Jeweller
- 2 × CR123A battery (pre-installed)
- Installation kit
- 2 × set of 4 EOL resistors
- Quick start guide
For your installation
- Selected as part of an installer-reviewed EN54 fire design.
- Confirm the supported control panel, device software and regional radio version; test coverage at the final installation position.
- The device is designed for indoor use only.
Product documents.
Find the right protection.
EN54 Fire Hub Jeweller
Coordinate the devices, zones and designed fire response.
EN54 Fire ReX Jeweller
Survey the final radio link and provide the required backup supply.
EN54 FireProtect Jeweller detectors
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