AJAX ReX 2 User manual

ReX 2 User Manual
Updated May 21, 2022
ReX 2 is a radio signal range extender of a security system with support for
alarm photo verication. Communicates with the hub via radio and Ethernet. 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 only works with . Connection to other hubs,
range extenders, as well as to and , is not provided.
The device is added to the system and congured via iOS, Android, macOS, and
Windows . Users will know about ReX 2 events through push notications,
SMS, and calls (if enabled).
compatible Ajax hubs
uartBridge ocBridge Plus
apps
Buy ReX 2 radio signal range extender

Functional elements
Operating principle
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 connector.
5. QR code with the identier (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
can communicate with the hub via radio (the Jeweller and Wings protocols) and
Ethernet cable if the devices are within the same network.
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
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Jeweller and Wings communication protocols
Range extender uses Jeweller technology to transmit alarms and events and
Wings to transmit photos. These are two-way wireless data protocols for data
transmission that provide fast and reliable communication between the hub,
range extender and system devices connected to a range extender.
The protocols support block encryption with dynamic key and device
identication at every communication session to protect against sabotage and
spoong.
To control communication with system devices and display their statuses, the
Ajax app provides a “hub — devices” polling system with an interval of 12 to 300
seconds. The polling interval is adjusted by the user or PRO with admin rights.
Connection via Ethernet
ReX 2 with the OS Malevich 2.13 rmware supports connection to the hub via
radio and Ethernet. The cable can be used as the only or additional
communication channel. A single Ajax system can now cover such an object as
an oce centre with underground parking, a metal hangar, or a warehouse
complex of several large buildings.
Learn more
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The hub and ReX 2 must be connected to the same network through a router for
this communication channel to work. The router is needed to determine the IP
address for the range extender. The network to which ReX 2 connects must
allow broadcast queries and an open 4269 port for all types of trac.
Connecting ReX 2 directly to the hub via an Ethernet cable is not provided.
ReX 2 can work with both static and dynamic IP addresses. If the range extender
is unable to establish an Ethernet connection with the hub, the will
display a malfunction. For convenience, the MAC address of the range extender
is also available in the error details, which can be used to nd and solve the
problem.
A communication loss notication is sent in two cases: if the hub completely loses
connection with the range extender, and also if the hub loses connection with the range
extender via the photos transmitting channel. If communication via Jeweller only or via
Wings only is lost (when Ethernet is connected), a notication is not sent.
Support of photo verication
ReX 2 radio signal range extender supports connection of
. ReX 2 range extender can transmit not only events and alarms but
also photos taken by the detectors.
Photo delivery time via range extender depends on the channel of the
communication with a hub, the type of detector and the resolution of the
images.
Photo delivery time via the Wings radio protocol:
Detector Photo resolution Photo delivery time via range
extender
MotionCam Jeweller
MotionCam (PhOD) Jeweller
160 × 120 Up to 8 seconds
320 × 240 (by default) Up to 18 seconds
640 × 480 Up to 31 seconds
ReX 2 states
detectors with photo
verication

MotionCam Outdoor Jeweller
MotionCam Outdoor (PhOD)
Jeweller
320 × 176 (by default) Up to 13 seconds
640 × 352 Up to 30 seconds
* Values are calculated assuming that the hub is working via Ethernet or 4G, and there are
three bars of a signal level between ReX 2 and the detector, as well as between the hub
and ReX 2. If you use the feature, there may be a short delay (up to 3
seconds) before the detector takes a photo.
Photo delivery time via Ethernet:
Detector Photo resolution Photo delivery time via range
extender
MotionCam Jeweller
MotionCam (PhOD) Jeweller
160 × 120 Up to 6 seconds
320 × 240 (by default) Up to 10 seconds
640 × 480 Up to 17 seconds
MotionCam Outdoor Jeweller
MotionCam Outdoor (PhOD)
Jeweller
320 × 176 (by default) Up to 10 seconds
640 × 352 Up to 17 seconds
* Values are calculated assuming that the hub is working via Ethernet or 4G, and there are
three bars of a signal level between ReX 2 and the detector, as well as between the hub
and ReX 2. If you use the feature, there may be a short delay (up to 3
seconds) before the detector takes a photo.
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 (2G) 5
Hub 2 (4G) 5
Hub 2 Plus 5
Photo on Demand
Photo on Demand
Features of photo verication in the Ajax security system

Hub Hybrid (2G) 5
Hub Hybrid (4G) 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.
ReX 2 connects to the hub only directly. Connection to another range extender is
not provided.
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 (2G) 99
Hub 2 (4G) 99
Hub 2 Plus 199
Hub Hybrid (2G) 99
Hub Hybrid (4G) 99
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), ADEMCO 685 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:
available at the link
Connecting Ajax to monitoring software
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.

The ReX 2 loop (zone) number is also available in the Groups menu (Ajax app →
Devices → Hub → Settings → Groups).In order to nd out the loop (zone)
number, select the group in which the range extender is located. The Device
Number corresponds to the loop (zone) number.
Compatible hub models
ReX 2 requires a hub for operation. List of compatible hubs:
Connection to , , and
is not provided.
Connection
The range extender only works with . Connection to other hubs,
range extenders, as well as to and , is not provided.
Before connecting, make sure that:
4. Select ReX 2. The loop (zone) number is displayed at the very bottom of the
page.
Hub 2 (2G)
Hub 2 (4G)
Hub 2 Plus
Hub Hybrid (2G)
Hub Hybrid (4G)
other hubs radio signal range extenders ocBridge Plus
uartBridge
compatible Ajax hubs
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.

In order to connect ReX 2 to the hub:
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 supply. Connect an Ethernet cable to ReX
2.
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

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 (or Jeweller/Fibra for the Ajax hybrid hubs); 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 notication in the Ajax app.
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,
7. Click Add; the countdown will begin.
8. Turn on ReX 2 by holding the power button for 3 seconds.
hub
model

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
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 notications about triggering of the tamper temporarily disabled.
States
Learn more
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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 eld is displayed if the rmware 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
rmware version is available on the server.
Malfunction
Clicking on opens the ReX 2 malfunctions
list.
The eld 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.
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.

Connection via Jeweller
Connection status between the hub and ReX 2
range extender via Jeweller:
Ethernet
Status of connection between the hub and the
ReX 2 range extender via Ethernet:
Pressing the button displays the connection
information: IP Address, Subnet Mask, Gateway,
and MAC Address of the 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 photos
taken by the detectors with photo verication.
Connection via Wings
Status of connection between the hub and the
ReX 2 range extender via Wings:
Radio transmitter power The eld is displayed if the Attenuation Test is
enabled.
Learn more
Online — the range extender is connected.
Oine — no connection to the range
extender.
Connected — the range extender is
connected.
Not connected — no connection with the
range extender.
Disabled — Ethernet connection is disabled
in the range extender settings.
Learn more
Online — ReX 2 can transmit photos to the
hub.
Oine — ReX 2 cannot transmit photos to
the hub.
Maximum — the maximum power of the
radio transmitter is set in the Attenuation
Test.

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 supply
The presence of external power supply 110–
240 V:
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.
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.
No — the device operates normally and
transmits all events.
Lid only — the hub administrator has
disabled notications about triggering of the
device tamper button.
Entirely — the device is completely excluded
from the system operation by the hub
administrator.
Learn more

Firmware
ReX 2 rmware 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
ReX 2 settings can be changed in the :
Settings Meaning
Learn more
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.

Name
ReX 2 name. Displayed in the text of SMS and
notications 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.
The room name is displayed in the text of SMS
and notications in the event feed.
Ethernet Settings
Menu for connecting to the hub via Ethernet:
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.
Pair with device
Menu for selecting devices that work via the
range extender.
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.
Connection via Ethernet — enables or
disables the connection via Ethernet.
Connection Type — allows you to adjust the
type of connection: DHCP or static IP
address.
MAC Address — shows and allows you to
copy the range extender MAC address.
Learn more
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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:
The system will only ignore the disabled
device. The 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.
Learn more
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Entirely — the device will not execute
system commands or participate in
automation scenarios, and the system will
ignore device alarms and other notications.
Lid only — the system will ignore
notications about the triggering of the
device tamper button only.
Learn more

Connecting devices to ReX 2
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 . 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:
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.

Malfunctions
ReX 2 can notify about malfunctions, if any. Malfunctions eld is available in
Device States. Clicking on opens the list of all malfunctions. The eld is
displayed if a malfunction is detected.
Malfunction Description Solution
Some functions do not work.
The eld is displayed if the
rmware 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 rmware
version is available on the
server.
Indication
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.