Ajax EN54 Fire ReX Jeweller

FAQs

What is the purpose of the Ajax EN54 Fire ReX Jeweller?

The EN54 Fire ReX Jeweller is a wireless range extender designed to expand the coverage of Ajax EN54 Line fire alarm systems across large or complex facilities. It enables reliable wireless communication for fire safety devices, intrusion protection equipment, and automation devices through challenging environments including buildings with steel and concrete construction. By extending the wireless network range up to 1,800 meters and supporting up to 5 extenders per system (covering up to 35km²), it makes wireless fire alarm technology viable for expansive commercial, industrial, and institutional facilities where traditional wired systems would be costly or impractical to install.

What are Jeweller and Wings communication protocols?

Jeweller and Wings are Ajax’s proprietary secure two-way radio communication protocols. Jeweller transmits real-time device status, alarms, events, and all measured readings to Ajax apps with exceptionally fast alarm delivery (0.3 seconds). It provides the primary communication channel for fire detectors, sensors, and control devices. Wings is designed specifically for transferring visual data and large data packets, such as photo series from MotionCam detectors for alarm verification and firmware updates, with delivery speeds up to 18 seconds wirelessly or 10 seconds via Ethernet. Both protocols incorporate block encryption and device authentication, providing protection against sabotage, spoofing, data theft, and jamming through radio frequency hopping and automatic channel switching.

How many Fire ReX Jeweller units can be used in one system?

Up to 5 Fire ReX Jeweller range extenders can operate within a single Ajax system. This architecture allows for exceptional scalability, enabling wireless fire alarm coverage across areas up to 35 square kilometers. The multiple extender capability is particularly valuable for multi-building campuses, large industrial facilities, extensive commercial complexes, or any installation where a single extender’s 1,800-meter range would be insufficient. Each extender seamlessly integrates into the mesh-like wireless network, ensuring reliable communication paths even in challenging RF environments.

Can the Fire ReX Jeweller connect via Ethernet as well as wirelessly?

Yes, the Fire ReX Jeweller offers dual connectivity options: wireless radio communication and wired Ethernet connection. The device features an 8P8C Ethernet socket supporting data rates up to 100 Mb/s. Ethernet connectivity can be used as the primary connection to the Control and Indicating Equipment (CIE) or as a backup communication channel. This is particularly useful in environments with significant radio frequency interference, large metal structures, or where maximum reliability is required. The Ethernet connection also provides faster data transfer for photo delivery (up to 10 seconds compared to 18 seconds via wireless Wings protocol), beneficial when using MotionCam detectors for visual alarm verification.

What is visual verification of alarms?

Visual verification is a sophisticated feature enabled by the Fire ReX Jeweller working with Ajax MotionCam and MotionCam Outdoor detectors. When these cameras detect motion or are triggered by a fire alarm, they automatically capture a series of animated pictures showing the situation at the facility. These images are transmitted via the Wings protocol through the Fire ReX Jeweller to the Ajax apps, allowing security personnel or fire marshals to immediately assess whether an alarm is genuine or false. This visual verification capability, combined with automation scenarios, enables rapid and informed decision-making during alarm events, potentially reducing false alarm responses while ensuring appropriate action for genuine emergencies.

How is the Fire ReX Jeweller added to an Ajax system?

Adding the Fire ReX Jeweller to an Ajax system is exceptionally simple through QR code scanning via the Ajax mobile apps. No specialized tools, programming equipment, or technical expertise is required. Simply scan the QR code on the device or in the documentation using the Ajax app, and the system automatically recognizes and adds the range extender. Configuration and testing are also performed through the intuitive Ajax apps, with a dedicated field available to specify the exact device location within the facility. This streamlined installation process significantly reduces commissioning time and eliminates the complexity typically associated with fire alarm system expansion.

What backup power options are available?

The Fire ReX Jeweller offers two EN54-compliant internal Li-ion battery backup options. The EN54 Internal Battery (24h) provides 7.4V, 5Ah capacity, supporting up to 24 hours of operation during mains power failure. The EN54 Internal Battery (72h) provides 7.4V, 10Ah capacity, supporting up to 72 hours of operation. This extended 72-hour option meets requirements for installations where prolonged mains outages are possible or where regulations require extended backup capacity. The tool-free battery replacement design ensures maintenance can be performed quickly without specialized equipment, minimizing downtime during battery service.

What is the SmartBracket mounting system?

SmartBracket is Ajax’s intelligent mounting panel system designed for faster, easier installation without requiring disassembly of the device enclosure. The bracket allows the Fire ReX Jeweller to be securely mounted to the wall or surface while keeping the device intact, protecting internal components and maintaining tamper seals during installation. This design accelerates the installation process, reduces the risk of damage to the device, and ensures proper mounting alignment. The bracket is included in the complete set along with installation kit components, special tools where needed, and a quick start guide.

Can the Fire ReX Jeweller be used for non-fire devices?

Yes, the Fire ReX Jeweller supports Ajax intrusion protection devices and automation equipment in addition to fire safety devices. This enables comprehensive integrated systems combining fire detection, security, and building automation within a single Ajax platform. Devices can be mixed within the Control and Indicating Equipment’s (CIE) limits to leverage the benefits of the integrated system, including visual verification of alarms, automated responses, and unified management through Ajax apps. This integration capability is valuable for modern smart buildings requiring coordinated fire safety, security, and building management functions.

What protection does the Fire ReX Jeweller have against interference and jamming?

The Fire ReX Jeweller incorporates multiple technologies to ensure reliable communication even in challenging RF environments. Radio frequency hopping automatically switches between communication channels if interference or connection loss is detected. Device authentication prevents spoofing and unauthorized access. Block encryption protects against data interception and tampering. The system monitors for jamming attempts and can alert operators to intentional interference. Additionally, the Ethernet connectivity option provides an alternative communication path completely independent of radio frequencies, ensuring alarm transmission even if wireless communication is compromised. The polling interval (12-300 seconds, adjustable) can be optimized by professionals or users with admin rights to balance responsiveness with radio efficiency.