ReX Jeweller

ReX Jeweller

Boosts the range of Ajax security system devices
3,449 UAH
VAT included

Security on a massive scale

ReX is the radio signal range extender that boosts the range of all Ajax security system devices and manages their communication with the hub. The intelligent radio signal range extender enables users to place Ajax devices at a considerable distance from the hub for protecting multi-story offices, detached buildings, and even production plants. Connecting 5 ReXs to the security system extends its coverage to up to 35 km².
Security on a massive scale
Security on a massive scale
Transmits alarms in 0.3 seconds
Communicates at a distance of up to 1800 m
Operates up to
35 hours on the back-up battery

Reliable link for secure communication

ReX can manage some or all the devices in the system. Yet, the number of connected devices does not affect the alarm delivery speed.
Reliable link for secure communication

Up to 5 range extenders can operate in the security system



Hub Plus


Hub 2


Hub 2 Plus


Hub Hybrid


Enhances the security system

ReX integrates the devices into an autonomous group within the system. The extender takes full control of the situation if the connection with the hub is interrupted for some reason. If one of its detectors sends an alarm signal, ReX may activate the siren to attract attention to the incident and scare off the burglar.
Enhances the security system

The second decision-making center

ReX runs on OS Malevich and is as capable as the hub. The intelligent extender manages its connected devices and makes critical decisions in a blink of an eye. The capabilities and the role of ReX in the security system continue to evolve with the free OS Malevich updates available for all the users.
The second decision-making center
  • Always in sync with the hub
  • Immediate reaction to threats
  • New features with every system update

Holds off the intruder attacks

The OS Malevich unique operation logic protects ReX against software and hardware attacks and makes it resistant to viruses or exploits. Moreover, all the ReX communications are encrypted, which makes any signal interception practically impossible. And even during a blackout, ReX will continue to stay on guard of your property using the in-built back-up battery.
Holds off the intruder attacks
  • Functions up to 35 hours after power outage
  • All data is encrypted using a block cipher with a dynamic key
  • Notifies of jamming and tampering with the device body

Intuitive connection and installation

To connect ReX to the system, scan the QR code, name it, and switch it on. Then, select the devices which should operate via the range extender from the list. Proceed by installing ReX in a safe spot. No disassembling required. Just use the SmartBracket mount.
Intuitive connection and installation
  • QR code for
    simple connection
  • SmartBracket mount
    for quick set up
  • Mobile application for configuring and testing

Tech specs

Radio channel range extender
Device type
Installation method
All Ajax hubs

Doesn’t support MotionCam detectors
Alarm signal delivery time
0.3 seconds
Maximum connected devices (in a system with one range extender)
Hub, Hub 2, Hub Hybrid — up to 99
Hub Plus — up to 149
Hub 2 Plus — up to 199
Max number of connected ReX per hub*
Hub — 1
Hub Plus/Hub 2/Hub 2 Plus/Hub Hybrid — 5

*ReX can only be directly connected to the hub. ReX cannot be connected to another ReX
Operating system
Power supply
110-240 V from mains or 12 V when using 12V PSU for Hub/Hub Plus/ReX
Built-in back-up battery: Li-Ion 2 А·h
Up to 35 hours of offline operation
Jeweller radio technology
Communication range with detectors — up to 1,800 m in an open space
Two-way communication between devices

Radio 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 region of sale)

Self-adjusting RF output power — up to 20 mW
Block encryption based on AES algorithm
Detector polling period — 12−300 s
Frequency hopping

Learn more about Jeweller
Operating temperature range
From −10°С to +40°С
Permissible humidity
Up to 75%
Protection against fraud
Jamming detection
163 × 163 × 36 mm
330 g
Within 24 months from the date of sale
Complete set
Intelligent radio signal range extender ReX
SmartBracket mounting panel
Power cable
Installation kit
Quick Start Guide

Choose the most suitable Ajax set in 2 minutes

Tell us what you need to protect and we will put together a set of detectors and devices for your premises.

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Ajax ReX intelligent signal repeater for security

Ajax ReX is an Ajax radio repeater that extends the range of all devices connected to the security system. The ReX signal repeater controls the alarm devices connected to it, allowing users to install them at a considerable distance from the control panel: in detached buildings, multi-storey offices, or large production. The coverage of the radio network of the security system can be extended up to 35 km² if five radio repeaters are connected to it.

Ajax ReX signal repeater functionality

ReX can run all or part of users' security system devices. At the same time, the number of devices connected to the repeater does not affect the speed of delivery of alarms. The ReX radio repeater integrates burglar alarm detectors into an autonomous group within the system. Suppose the radio communication with the control panel is interrupted. In that case, the ReX signal repeater will take control: it will receive an alarm signal from the sensor and scare off the intruder with a loud siren. ReX is based on the Malevich OS, which provides the device with reliability and allows easy management of security features. The capabilities and role of ReX insecurity are growing with Malevich OS updates — free for users.

Features of the Ajax ReX radio repeater

The ReX radio repeater for signalling continuously synchronizes data about the system and its status with the security system. The device responds instantly to the operation of security sensors and gets new features with each update. ReX is protected from attacks at the hardware and software levels. OS Malevich operating system protects the device from cyberattacks and viruses. The information from the ReX repeater cannot be intercepted — the device receives and transmits all data in encrypted form. Sudden power outages in the protected room will not be a problem — ReX is equipped with a large battery that provides autonomous operation for 35 hours. Thanks to the two-way Jeweler radio protocol, communication with the control panel takes place at a distance of up to 1800 m without obstacles. Also, the device is subject to a health test every 12 to 300 seconds. If an attacker tries to mute the signal or damage the device's integrity, ReX will sound the alarm. Thanks to the tamper on the device's body, users of the system will immediately know about the attempt to dismantle the repeater from the surface.

Complete set of Ajax ReX

The Ajax ReX repeater kit for security devices includes:
  1. Ajax ReX radio repeater;
  2. power cable;
  3. SmartBracket mounting;
  4. mounting kit;
  5. instruction.

Ajax ReX compatibility

Ajax ReX only works with the Hub, Hub Plus, Hub 2, Hub 2 Plus and Hub Hybrid control panels. The repeater is not connected to the uartBridge and ocBridge Plus receiving panels.

Installation and adjustment of the Ajax ReX signal repeater

The Ajax ReX radio repeater is ready to work out of the box. The device is configured in the Ajax mobile application after reading the QR code indicated on the case, and alarm detectors are connected in one click. The repeater is mounted on the alarm in a few minutes to attach the SmartBracket with screws or double-sided tape.

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