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Boosts the range of all Ajax security system devices

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.

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.

Up to 5 range extenders can operate in the security system



Hub Plus


Hub 2


Hub 2 Plus


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.

Trouble resistant

With Hub 2, you’ll know immediately if the detector has a malfunction, if someone removed it, if it is damaged, or if its body is open. Even if the lights suddenly go out, the control panel will continue its watch powered by a back-up battery.

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.

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.

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



Alarm signal delivery time

0.3 seconds

Maximum connected devices (in a system with one range extender)

Hub, Hub 2 — 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 — 5

*ReX can only be directly connected to the hub. ReX cannot be connected to another ReX

Operating system

OS Malevich

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
Operating frequencies — 866.0 – 866.6 MHz
Self-adjusting RF output power — up to 25 mW
Block encryption based on AES algorithm
Detector polling period — 12−300 s
Frequency hopping

Operating temperature range

From −10°С to +40°С

Permissible humidity

Up to 75%


Protection against fraud
Jamming detection


OS Malevica163 × 163 × 36 mmh


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