GJD GJD140 Manual Download Page 1

IP65, Suitable 

for outdoor use

Masking protection 

to prevent intruder 

tampering

Dualtech sensor 

for reliable alarm 

detection

Temperature 

compensation for 

extreme environments

Detection range 

selectable 

3m - 12m

Pearl Curtain Beam Detector

GJD140 / GJD141 

PACKAGE CONTENTS

• 

1 x Pearl body

• 

1 x T-bracket assembly 

• 

4 x wall plugs

• 

4 x wall fixing screws

• 

1 x drilling template

• 

1 x opening tool

INTRODUCTION

The Pearl Detector is an outdoor motion detector with dual 

detection technology and anti-masking that uses PIR and 

microwave detection.

Both sensors must trigger to cause the detector to alarm 

ensuring precise and reliable presence detection. The 

detector has three N/C outputs for alarm, masking and 

tamper triggering.

QUICK INSTALLATION

1. 

Mount the detector following the instructions in 

sections “Mounting the Unit” and “Detector Placement 

and Beam Pattern”.

2. 

Power the unit and ensure switch 1 is set to ON. The 

unit will flash for two minutes during this time. Fit the 

front cover on the unit and when the unit has finished 

flashing it will be ready for walk testing.

MOUNTING THE UNIT

During installation, protect the electronics against water as 

trapped moisture can affect or damage the unit.

BASIC INSTALLATION, BEAM OUTWARD FROM 

SURFACE 

(see figures 2,3,11,13)

1. 

Use drilling template to locate the two mounting holes 

(A figure 2).

2. 

Next feed the cable through rear or side knock-outs 

and then fix to the wall (B & C figure 2).

INSTALLATION WITH T-BRACKET ASSEMBLY, BEAM 

ACROSS SURFACE

 

(see figures 4,5,12,14)

1. 

Use drilling template to locate the four mounting 

holes (A figure 4).

2. 

Next feed the cable through rear or side knock-outs ( 

B figure 4) and out through cable access point. Fix to 

the wall and then secure the blanking plate onto the 

unused side of the T-bracket (figure 5,15).

FRONT ASSEMBLY (see figure 6-10)

1. 

Feed cable through grommet. Clip middle section 

shown into lower part of back section (figure 8) push 

back until flat to wall. Cut and wire the cable into the 

terminal blocks (figure 6,7)

2. 

Push the bottom of the front cover into clip on the 

middle section and rotate back flat to the wall (figure 

8). Secure by tightening the screw in access hole. 

Finally push fit screw cover.

3. 

To access the unit once installed first lever off the 

screw cover (see figure 9). Unscrew the screw in the 

access hole. Next reverse steps shown in (figure 8) 

or to remove from the wall use provided clip to lever 

off the wall mounting (see figure 10).

DETECTOR PLACEMENT AND BEAM PATTERN

 (see 

figure 12 -15)

The detector uses microwave and infrared sensing to 

determine motion detection. The optimum position of the 

detector should be chosen to detect an intruder crossing 

the beam pattern (figure 13), and to avoid traffic from roads 

and paths (figure 14).

For applications where the T-bracket is used ensure the 

angle of the detector is pointing 2° away from the building 

(figure 15).

The detector should be at an optimum height of 2-2.5m. 

Secure the detector to a wall or solid fixture.

Two detectors must not be fitted back to back on the 

T-bracket. A minimum space of 2 metres must be left 

between detectors.

PROGRAMMING

The detector can be programmed with different range 

and sensitivity options and also LED indication. This can 

be done by changing the four DIP switch settings on the 

detector PCB (see figure 6). The range can be set to 3, 6, 9 

or 12m and the sensitivity can be changed to high or low.

WALK TEST

Set the LED Indication to Enabled (figure 6). On power up 

the LED will flash red and green alternately for 2 minutes. 

The detector will then indicate an alarm condition with a 

red LED.

The alarm detection will flash red for 1s with an interval of 

5s between detections when LED indication is ON.

The masking condition is indicated with a continuous green 

led indication when LED indication is ON.

MASKING OUTPUT

A masking event will be triggered after 60s of masking of 

the lens. The masking output will be cleared by removing 

the masking object. To re-calibrate the masking reset 

power to the device or change a DIP setting and replace 

the cover and allow to calibrate.

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