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GJD mini Opal
30 metre External PIR
Installation and Set Up Guide
The mini Opal is an attractively styled, 30 metre Passive
Infrared (PIR) detector that works with GJD security
lighting controllers. The mini Opal has additional
advanced PIR features as follows:
Sensor mounted white-light filter (sun glasses) to
prevent false detections on sunny days
Dual tamper switches for case and wall-mount tamper detection
Zone blanking using vertical curtains and horizontal foil for precise area coverage
±90° horizontal and ±45° vertical aim adjustment
Conformally coated electronics for enhanced UV and moisture resilience
Attractive, 21st century styling with a protective cover to disguise sensor direction
Field of View
The mini Opal has 10 Fresnel lenses that focus areas onto the receptor. The 10 lens areas
give 10 fields of view as follows: 5 long-range (lenses 0 to 4) and 5 medium- to short-
range (lenses 5 to 9). Movement between fields produces a stronger response than
movement towards or away from the sensor in the same field.
The 10 lenses monitor the area in front of the sensor as shown in the figure.
10
20
30 metres
0
15
5
10
15
0
5
10
5
0
1
6
7
2
8
3
9
4
0
5
1
6
2
7
3
8
4
9
Figure 1: Diagram showing the 10 lenses and their views
