AJAX ReX 2 User manual

ReX 2 User Manual
Updated November 19, 2021
ReX 2 is a radio signal range extender of a security system with support for alarm
photo verification. ReX 2 expands the radio communication range between the Ajax
devices and the hub up to 2 times. It is designed for indoor installation.
It has a built-in tamper for protection against tampering and is equipped with a
backup battery for 38 hours of battery life.
The range extender is compatible with and . Connection to other hubs, as
well as and integration modules, is not provided.
The device is added to the system and configured via iOS, Android, macOS, and
Windows . Users will know about ReX 2 events through push notifications,
SMS, and calls (if enabled).
Hub 2 Hub 2 Plus
uartBridge ocBridge Plus
apps

Functional elements
Operating principle
Buy ReX 2 radio signal range extender
1. Logo with an LED indicator.
2. SmartBracket mounting panel. Slide it down with force to open.
The perforated part is necessary for tamper triggering in case of any attempt to detach
the range extender from the surface. Do not break it off.
3. Power cable connector.
4. Ethernet cable socket.
5. QR code with the identifier (service number) of the range extender.
6. Tamper button.
7. Power button.

ReX 2 expands the radio communication range of the security system, allowing the
installation of Ajax devices at a greater distance away from the hub.
ReX 2 receives hub signals, transmits them to the connected devices, and sends
signals from devices to the hub. The hub polls range extender with the frequency of
12 to 300 seconds (depending on the settings, the default value is 36 seconds).
ReX 2 range extender polls all connected devices with the same frequency.
Regardless of the settings, all alarms are delivered in no more than 0.3 seconds.
The communication range between ReX 2 and the device is limited by the radio
signal range of the device. Radio signal range is indicated on the device page
and in the User Manual.
If the device loses communication with a range extender for some reason, it does
not automatically connect to another range extender or hub.
on
the website

Support of photo verification
ReX 2 radio signal range extender supports connection of detectors with photo
verification: and . ReX 2 range extender can
transmit not only events and alarms but also photo confirmations.
The time of delivery of a photo via a range extender depends on the type of
detector and the resolution of the images:
Detector Photo resolution Photo delivery time via range
extender
MotionCam
160 × 120 Up to 9 seconds
320 × 240 (default) Up to 19 seconds
640 × 480 Up to 36 seconds
MotionCam Outdoor
320 × 176 (default) Up to 13 seconds
640 × 352 Up to 30 seconds
* Values were calculated with a signal strength of 3 bars between ReX 2 and the detector or
between the hub and ReX 2. The hub works via Ethernet or 4G.
Number of connected range extenders and devices
Depending on the model, the following number of range extenders can be
connected to the hub:
Hub model ReX 2 quantity
Hub 2 5
Hub 2 Plus 5
It doesn’t matter exactly what type of range extender is used: ReX or ReX 2. They
can be connected to the system in any combination within the hub limitations.
MotionCam MotionCam Outdoor
Features of photo verification in the Ajax security system

ReX 2 connects to the hub only directly. Connection to another range extender is
not provided.
Please note that ReX 2 does not increase the number of devices connected to the
hub. The maximum number of devices connected to ReX 2 depends on the hub
model.
Hub model Number of connected devices
Hub 2 99
Hub 2 Plus 199
Sending events to the monitoring station
Ajax security system can connect to the CMS and transmit alarms and events in
SurGard (Contact ID), SIA (DC-09), and other proprietary protocol formats. A
complete list of supported protocols is .
The ReX 2 loop (zone) number can be found in the device states. In order to obtain
it:
The ReX 2 loop (zone) number is also available in the Groups menu (Ajax app →
Devices → Hub → Settings → Groups).
In order to find out the loop (zone) number, select the group in which the range
extender is located. The Device Number corresponds to the loop (zone) number.
available here
Which CMSs can the Ajax security system be connected to
1. Sign in to the .Ajax app
2. Select the hub if you have several of them or if you are using a PRO app.
3. Go to the Devices menu.
4. Select ReX 2. The loop (zone) number is displayed at the very bottom of the
page.

Connection
The range extender is compatible with and . Connection to other hubs, as
well as and integration modules, is not provided.
Before connecting, make sure that:
In order to connect ReX 2 to the hub:
Hub 2 Hub 2 Plus
uartBridge ocBridge Plus
1. The is installed.Ajax app
2. An .account is created
3. The required hub has been added to the Ajax app.
4. This hub is enabled and at least one room has been created for it.
5. You have administrator rights for this hub.
6. The hub has internet access via at least one communication channel: Ethernet,
Wi-Fi, or a cellular connection. You can check this in the Ajax app or through
the hub logo on the faceplate. The logo should light up white or green.
7. The hub is disarmed and is not being updated. You can check this through the
status of the hub in the Ajax app.
1. Remove the SmartBracket mounting panel by sliding it down with force. Do not
damage the perforated portion as it is needed to trigger the tamper protecting
the range extender from dismantling.

2. Connect ReX 2 to external power.
3. Sign in to the Ajax app.
4. Select the hub if you have several of them or if you are using a PRO app.
5. Go to the Devices tab and click Add Device.
6. Name the range extender, scan or enter the QR code manually (indicated on the
device body and packaging), and select a room and a group (if the
is activated).
group mode
7. Click Add; the countdown will begin.
8. Turn on ReX 2 by holding the power button for 3 seconds.

To make sure ReX 2 is connected to the hub, the range extender must be located at the
same secured facility as the system (within the range of the hub’s radio network).
After connecting to the hub, the logo will change its colour from red to white within
30 seconds. The connected range extender will appear in the list of hub devices in
the Ajax app. The updating rate of the range extender states depends on the
Jeweller settings; the default value is 36 seconds.
If the connection fails, turn off ReX 2 and try again after 5 seconds. Suppose the
maximum number of devices has been added to the hub (depending on the
) when attempting to add the device. In that case, you will receive a
corresponding notification in the Ajax app.
Please note that ReX 2 only works with one hub. When connected to a new hub, the
range extender stops sending commands to the old one. Once added to a new hub,
ReX 2 is not removed from the list of devices of the old hub. This has to be done in
the Ajax app.
Malfunction badge
hub
model

When the range extender detects a malfunction (for example, there is no external
power supply), the Ajax app displays a badge with counter in the upper left corner
of the device icon.
All faults can be seen in the range extender states. Fields with faults will be
highlighted in red.
Icons

The icons display some of ReX 2 states. You can view them in the Devices tab
in the Ajax app.
Icon Meaning
Jeweller Signal Strength. Displays the signal strength between the hub and range extender.
The recommended value is 2-3 bars.
Battery charge level.
Malfunction detected. A list and description of malfunctions is available in the range
extender states.
ReX 2 is temporarily disabled.
ReX 2 has notifications about triggering of the tamper temporarily disabled.
States
Learn more
Learn more

The states include information about the device and its operating parameters. ReX
2 states can be found in the :
Parameter Meaning
Some functions do not work
The field is displayed if the firmware versions of
the hub and ReX 2 range extender do not match.
Make sure that automatic updates are enabled in
the hub settings. ReX 2 updates within half an
hour if the system is disarmed and a new
firmware version is available on the server.
Malfunction
Clicking on opens the ReX 2 malfunctions list.
The field is displayed if a malfunction is detected.
Jeweller Signal Strength
Jeweller signal strength between Hub and ReX 2.
Recommended values — 2-3 bars.
Jeweller is a protocol for the transmission of
events and alarms.
Connection
Connection status between the hub and ReX 2
range extender:
Wings Signal Strength Wings signal strength between the hub and ReX
2. Recommended values — 2-3 bars.
Wings is a protocol for transmitting MotionCam
and MotionCam Outdoor photo verification upon
alarm.
Ajax app
1. Select the hub if you have several of them or if you are using a PRO app.
2. Go to the Devices tab.
3. Select ReX 2 from the list.
Learn more
Online — the range extender is connected.
Offline — no connection to the range extender.

Photo transmission channel
Photo transmission channel status:
Radio transmitter power
The field is displayed if the Attenuation Test is
enabled.
Battery charge
The charge level of ReX 2 backup battery.
Displayed in increments of 5%.
Lid
The tamper status of the range extender that
responds to detachment or violation of the
integrity of the body:
External power The presence of external power supply 110–240
V:
Learn more
Online — ReX 2 can transmit photos to the
hub.
Offline — ReX 2 cannot transmit photos to the
hub.
Maximum — the maximum power of the radio
transmitter is set in the Attenuation Test.
Minimum — the minimum power of the radio
transmitter is set in the Attenuation Test.
Learn more
Open — the range extender mounting panel
was removed or the integrity of the device
body was violated.
Closed — the range extender is installed on
the mounting panel.
Learn more
Connected — the external power supply is
connected.
Disconnected — the external power supply is
disconnected.

Temporary Deactivation
Shows the status of the device temporary
deactivation function:
When the range extender is completely turned off,
the devices connected to it continue to operate
normally via ReX 2.
Firmware
ReX 2 firmware version. Updated remotely as
soon as the update is available on the Ajax Cloud
server.
ID
ReX 2 ID/serial number. Also located on the
device box, its board, and the body (under the
SmartBracket mount).
Device № Number of the device loop (zone).
Settings
No — the device operates normally and
transmits all events.
Lid only — the hub administrator has disabled
notifications about triggering of the device
tamper button.
Entirely — the device is completely excluded
from the system operation by the hub
administrator.
Learn more
Learn more

ReX 2 settings can be changed in the :
Settings Meaning
First field
ReX 2 name. Displayed in the text of SMS and
notifications in the event feed.
To change the device name, click on the pencil
icon .
The name can contain up to 12 Cyrillic characters
or up to 24 Latin characters.
Room Selecting the virtual room to which ReX 2 is
assigned.
Ajax app
1. Select the hub if you have several of them or if you are using a PRO app.
2. Go to the Devices tab.
3. Select ReX 2 from the list.
4. Go to Settings by clicking on the gear icon in the upper right corner.
5. Set the required parameters.
6. Click Back to save the new settings.

The room name is displayed in the text of SMS
and notifications in the event feed.
LED Brightness
Setting the brightness of the Ajax logo backlight
on the range extender. Adjustable from 0 to 10 in
increments of 1.
The default value is 10.
Jeweller Signal Strength Test
Switches ReX 2 to the Jeweller signal strength
test mode.
The test checks the signal strength between the
hub and ReX 2 through the channel for
transmitting events and alarms and determines
the optimal installation location.
Wings Signal Strength Test
Switches ReX 2 to the Wings signal strength test
mode.
The test checks the signal strength between the
hub and ReX 2 through the photo transmission
channel and determines the optimal installation
location.
Signal Attenuation Test
Switches ReX 2 to the signal attenuation test
mode.
The test decreases or increases the radio
transmitter power to simulate a change in the
environment to check the stability of the
communication between the range extender and
the hub.
Temporary Deactivation Allows the hub administrator to disable the device
without removing it from the system.
Two options are available:
Learn more
Learn more
Learn more

Please note that the system will only ignore the
disabled device. At the same time, devices
connected via ReX 2 will continue normal
operation.
User Manual Opens ReX 2 User Manual in the Ajax app.
Unpair Device
Unpairs ReX 2 from the hub and deletes its
settings.
If detectors have been connected to ReX 2, then
after unpairing the range extender they will try to
reconnect to the hub.
Connecting devices to ReX 2
Entirely — the device will not execute system
commands or participate in automation
scenarios, and the system will ignore device
alarms and other notifications.
Lid only — the system will ignore notifications
about the triggering of the device tamper
button only.
Learn more

In order to assign a device to a range extender, in the Ajax app:
Once connected, the selected devices in the Ajax app display the icon . Please
note that the device can be paired with one ReX 2 only. When a device is assigned
to a range extender, it is automatically disconnected from another connected range
extender.
In order to assign a device to the hub, in the Ajax app:
Malfunctions
1. Select the hub if you have several of them or if you are using a PRO app.
2. Go to the Devices tab.
3. Select ReX 2 from the list.
4. Go to Settings by clicking on the gear icon in the upper right corner.
5. Select the Pair with device menu item.
6. Select the devices that should operate via the range extender.
7. Click Back to save the settings.
1. Select the hub if you have several of them or if you are using a PRO app.
2. Go to the Devices tab.
3. Select ReX 2 from the list.
4. Go to Settings by clicking on the gear icon in the upper right corner.
5. Select the Pair with device menu item.
6. Uncheck the devices that need to be reconnected to the hub.
7. Click Back to save the settings.

ReX 2 can notify about malfunctions, if any. Malfunctions field is available in
Device States. Clicking on opens the list of all malfunctions. Note that the field
is displayed if a malfunction is detected.
Malfunction Description Solution
Some functions do not work.
The field is displayed if the
firmware versions of the hub
and ReX 2 range extender do
not match.
Make sure that automatic
updates are enabled in the hub
settings. ReX 2 updates within
half an hour if the system is
disarmed and a new firmware
version is available on the
server.
Indication

ReX 2 LED indicator may light up white, red, or green, depending on the status of
the device.
Indication Event Note
Lights up white.
Connection is established with
the hub through at least one of
the channels: Jeweller or
Wings.
If the external power supply is
off, the indicator will flash every
10 seconds.
Lights up red. No communication with the
hub.
If the external power supply is
off, the indicator will flash every
10 seconds.
Lights up for 3 minutes, then
flashes every 10 seconds.
The external power supply is
disconnected.
The colour of the indication
depends on the presence of
connection to the hub.
Functionality testing
ReX 2 functionality tests do not begin immediately, but not later than over a single
ping period of the hub–detector (36 seconds with the standard settings of the
hub). You can change the ping period of devices in the Jeweller menu of the hub
settings.
To run a test, in an Ajax app:

Selection of the installation site
When choosing a location, consider 2 main factors:
You should consider the signal strength both between the hub and the range
extender and between the range extender and all devices connected to it.
Locate ReX 2 in a place with stable Jeweller and Wings signal strength (2-3 bars in
the Ajax app). When choosing a site for installation, consider the distance between
the range extender and the hub and any obstacles between the devices hindering
the radio signal passage: walls, intermediate floors, or large-size objects located in
the room.
Be sure to check the Jeweller and Wings signal strength at the installation site. If the signal
strength is low (a single bar), we cannot guarantee the stable operation of the security
system. At the very least, relocate the device as repositioning even by 20 cm can
significantly improve the signal reception.
1. Select the hub if you have several of them or if you are using a PRO app.
2. Go to the Devices tab.
3. Select ReX 2.
4. Go to Settings .
5. Select one of the available tests:
Jeweller Signal Strength Test
Wings Signal Strength Test
Signal Attenuation Test
Jeweller Signal Strength.
Wings Signal Strength.