AJAX DualCurtain Outdoor User manual

DualCurtain Outdoor User Manual
Updated October 22, 2021
DualCurtain Outdoor is a wireless bidirectional outdoor curtain motion detector
with an adjustable detection range of up to 30 meters. The detector features an
anti-masking system and ignores pets if set up and installed correctly.
DualCurtain Outdoor has a narrow horizontal detection angle and is designed to
control property perimeter and passages: windows, archways, doors, gates.
The detector is compatible only with , , , and the
. Connectivity with and the and integration modules
is not supported!
DualCurtain Outdoor operates as part of an Ajax security system by connecting via
the secure radio communication protocol. The communication range with
a hub in the line of sight is up to 1,700 meters.
Hub Plus Hub 2 Hub 2 Plus ReX range
extender Hub ocBridge Plus uartBridge
Jeweller

Functional elements
Exterior
Buy DualCurtain Outdoor
1. LED indicator in the form of Ajax logo
2. Left-side detector lens
3. Left-side masking sensors
4. Right-side detector lens
5. Right-side masking sensors
6. SmartBracket mounting panel (slide the panel down to detach it)
The perforated part is necessary to trigger a tamper if there is an attempt to tear off the
detector from the surface. Do not break it!
7. The hole for attaching SmartBracket panel with a screw

Controls
Control and adjustment elements are located on the back of the detector.
Controls for the left side of the detector
1. Tamper button
2. Power button
3. QR code to connect to an Ajax security system

Adjustment elements for the right side of the detector
1. Near area detection switch
2. Beam direction switch
3. Scrollbar for adjusting the Detection distance
1. Near area detection switch
2. Beam direction switch

Operating principle
DualCurtain Outdoor is a bidirectional outdoor curtain motion detector that uses IR
sensors to identify moving objects with temperatures close to that of the human
body.
When armed, the detector continuously processes the sensor signals. When
motion is detected, DualCurtain Outdoor transmits an alert to a hub and alarms by
ashing the logo (if the indication is on). Motion is detected only if both IR sensors
on the same side are triggered.
When received an alarm event, a hub activates sirens, executes scenarios, noties
users and a security company. All DualCurtain Outdoor alerts and events are
recorded in the notication feed of the Ajax app.
The detector informs of consecutive triggerings at 5 seconds intervals. Keep this in mind
when testing the detector.
3. Scrollbar for adjusting the Detection distance
Learn more about Ajax motion detectors

DualCurtain Outdoor features two narrow-angle motion detectors facing opposite
directions. The detection range in total can reach up to 30 meters long (15 meters
in each direction).
The detection distance for each side can be adjusted independently, allowing you
to set the detection zone precisely and avoid false alarms caused by bushes, trees,
or other objects.
Users are notied of where the motion was detected. Notications include the
device name, the virtual room, and the name of the triggered side. Pressing the
button opens an image of the triggered side.
The detector doesn’t arm instantly. The arming time depends on two factors: exit delays
(specied in the detector settings) and the detector ping interval (Jeweller settings, the
default value is 36 seconds). The delay can be equal to the ping interval and extended by the
delay set by a user.
Pet immunity
When set up and installed correctly, DualCurtain Outdoor ignores pets up to 80
centimeters tall. The detector is equipped with four IR sensors (two on each side).
DualCurtain Outdoor only activates an alarm when motion is detected by both
sensors on a side.

If installed correctly, animals will trigger only one of the detector’s sensors. In such
a way, DualCurtain Outdoor lters false alarms. For additional protection against
false alarms, the detector .
Anti-masking system
Masking is an attempt to block the view of the detector by painting over it, covering
it, placing an obstacle in front of the detector’s lens, or otherwise.
DualCurtain Outdoor detects the following types of masking:
Masking type Time to alarm, seconds Time to restore, seconds
Obstacle in front of the
detector’s lenses (at a distance
of up to 10 centimeters from
the lens)
7 20
Painting over the lenses or the
detector’s side 100 20
Taping the lenses or the
detector’s side 100 20
The system informs users and a security company monitoring station about
masking. For extra protection and awareness, turn on the ’ response to
masking. The maximum masking detection time is 180 seconds (depends on the
type of obstacle and the distance to it).
Note that the anti-masking system is always active and works regardless of the security
applies ELSA, an advanced software algorithm
Why motion detectors react to animals and how to avoid it
Obstacle in front of the detector’s lens at a distance of up to 10 centimeters
(depends on the material).
Painting over the lenses or the detector’s side.
Taping the lenses or the detector’s side.
sirens

mode.
Protection against false triggerings
To lter false alarms, DualCurtain Outdoor applies ELSA (Extended Live Signal
Analysis) — a three-stage software algorithm that analyzes the signals received
from two narrow-angle IR sensors of the same optical system.
1. Form analysis
The shapes of both IR sensor signals should indicate the crossing of the secured
zone. In any direction: either perpendicular or along the direction of the detector
optics. At the same stage, a correction for the signal intensity is made to take into
account the distance from the sensors and the size of the object.
2. Patterns comparison of
The signal amplitudes are veried with the pattern database. To create it, we
analyzed thouthands of test triggers of curtain detectors on people, animals, lights,
and other natural sources in various weather conditions. Signal patterns should be
the same or insignicantly different from those typical to humans.
3. Time verication
When signals from both IR sensors match the conditions: this is motion and it is
typical for a human, the ELSA algorithm compares the time frames of the signals —
whether the upper and lower sensors detected the motion synchronously.
The system raises an alarm if all three conditions are met. The ELSA algorithm
takes less than 1 second to render a “threat” or a “false alarm” verdict.
Near area detection
Typically, outdoor curtain detectors have a blind spot near the enclosure. Its size
depends on the height of the installation, the type of the detector, and the motion

detection distance. The blind spot creates a potential vulnerability in the security
system.
DualCurtain Outdoor uses a technology extending the detection area that is unique
among outdoor curtain detectors to. When the Near area detection is activated, the
upper IR sensor of the detector receives an additional narrow sector of view,
directed at the angle of 40 degrees downward.
When enabled, Near area detection signicantly reduces the blind spot near the
sensors and enables covering doors, windows, and other pathways into the room
that are in close proximity to the detector.
The Near area detection mode is activated for each side on the back of the
detector enclosure, and it allows the sensors to detect motion when a person
crosses the protected perimeter near the device, eliminating the blind spot.
The Near area detection mode is designed to protect windows and other passages that are
not accessible to animals because it signicantly reduces the ecacy of pet immunity in the
proximity of the detector.
Viewing angle shift
With the Beam Direction slider, the DualCurtain Outdoor viewing angle can be
shifted by 3 degrees in the horizontal perspective. Shifting applies separately for
each side of the detector.
This feature helps to avoid blind spots and hinderings if there are obstacles in the
detection zone. For example, gutters, columns, or lamps.
Event transmission to a monitoring station
The Ajax security system can transmit alarms to central monitoring stations (CMS)
in Sur-Gard (ContactID), SIA (DC-09), and other proprietary protocol formats. The
complete list of supported protocols is .available here

The device ID and the loop (zone) number can be found on the . Keep
in mind that an alarm of each side is delivered to a CMS software with one code.
You can distinguish between right and left side detector alarms in the
app.
Adding to the system
The detector is not compatible with , third-party security control panels, and
and integration modules.
Before adding a device
Only a user or a PRO with administrator rights can add a device to the hub.
How to add DualCurtain Outdoor to the system
Which CMSs can the Ajax security system be connected to
states screen
Ajax PRO
Desktop
Hub ocBridge
Plus uartBridge
1. Install the . Create an . Add a hub to the app and create at
least one room.
Ajax app account
2. Make sure that the hub is on and has access to the Internet (via Ethernet cable,
Wi-Fi, and/or mobile network). You can do this in the Ajax app or by checking
the hub logo on the faceplate. The logo should light up white or green if the hub
is connected to the network.
3. Make sure that the hub is disarmed and does not update by checking its status
in the Ajax app.
Types of accounts and their rights