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Uses GSM or Ethernet to send alarms to the Central Monitoring Station and the owner
Sends a notification in case of electrical power loss and operates for up to 15 hours from battery backup
Checks the functionality of detectors at least every 12 seconds

More applications of a security system

Range extenders expand the boundaries of the protected area and give even more freedom to place security system devices. By connecting all or part of the devices1 to ReX 2, you will ensure the security and automation of a business centre, big estate, warehouse complex, or a large production facility.

5 range extenders can operate within the Ajax system to expand the radio network coverage up to 35 km2 2. Events and alarms are transmitted instantly, and the first photo verification snapshot is delivered to a monitoring station and users in just 10 seconds3.

Guaranteed delivery of alarms and photo verifications

Boost the potential of your security system with scenarios to actively resist the threats it detects and automate your routines. Set up a Night mode activation on schedule; turn off all the office lights automatically by arming the system; program the outdoor lights to spotlight trespassers when they trigger an outdoor motion detector; or install a sustainable anti-flood system. The system continues to execute scenarios even if the connection with Ajax Cloud is lost.

Motion detected

Alarm triggered

Evidence captured

Tech specs

Installation Methid


Compatibility with Ajax control panels

Compatibility with Ajax range extenders

ReX 2 does not connect to another range extenders

Compatibility with Ajax detectors and devices

The list of compatible devices

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

Hub 2 (2G)
up to 99

Hub 2 (4G)
up to 99

Hub 2 Plus
up to 199

Hub Hybrid (2G)
up to 99

Hub Hybrid (4G)
up to 99

Number of range extenders connected to the compatible hub


Operating system

Main power supply

110-240 V, 50/60 Hz

12V⎓ with 12V PSU
for Hub 2/ReX 2

6V⎓ with 6V PSU
for Hub 2/Hub 2 Plus/ReX 2

Backup power supply

Li-Ion 2 A·h
built-in backup battery

Up to 38 hours of backup battery life
when Ethernet is disabled

Up to 12 hours of backup battery life
when Ethernet is connected

Jeweller and Wings radio protocols

Communication range in an open space

between ReX 2 and a hub
up to 1,700 m

between ReX 2 and connected devices
up to 1,700 m
depends on device model

Two-way communication

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 sales region)

Maximum effective radiated power (ERP)
up to 20 mW

Polling interval
from 12 to 300 s
Adjusted by PRO or user with admin rights in the Ajax app.

Encrypted communication
Block cipher encryption based on the AES algorithm

Frequency hopping

Connection via Ethernet

8P8C connector

Up to 100 Mbps speed

Available with OS Malevich 2.13

Alarm signal delivery time


Operating temperature range

From −10°C to +40°C

Operating humidity

Upto 75%


Protection against spoofing
Jamming notification
Tampering alarm


163 × 163 × 36 mm




24 Months

Complete Set

ReX 2
SmartBracket mounting panel
Power supply cable
Ethernet cable
Installation kit
Quick start guide

Service life

10 Years