GJD Mini Opal Manual Download Page 3

DRIVING A PIEZO BUZZER FROM THE A CONNECTION

This configuration can be useful as a temporary measure during your 

walk-test. The piezo buzzer will sound every time a detection takes 

place.

Figure 9: Piezo buzzer wring diagram

WALK TEST

The walk test iterates through the following adjustments until the 

correct area is covered.

TIP: The field of view of the mini Opal is affected by the cover. 

Always perform the walk test with the cover fitted removing the cover 

each time you need to make adjustments.

1. 

Adjust the aim of the sensor, loosen the top and side plastic 

wing-nuts and swivel the bracket. Tighten the wing-nuts again 

and replace the cover.

2. 

Configure the field of view by blanking lens area as necessary. 

You may want to blank parts of the field using the vertical 

curtains or by cutting the foil sticker to size. Apply the sticker 

to smooth, rear side of the lens.

3. 

Adjust the range between 8 and 30 metres using the PCB 

mounted pot.

Figure 10: Range and lux potentiometers

DUSK ADJUSTMENT

Adjust the lux level for the day-night setting using the lux PCB 

mounted pot.

The S output is factory set to start operating at dusk. That is, when 

the light level falls below 5 lux. If the ambient night-time light levels 

are higher than 5 lux then the S output will remain inactive and your 

lights will not turn on.

• 

If the light level in your installation is about 5 lux at night (lights 

do not operate), increase the light level at which the S output 

starts to operate, by turning the lux pot clockwise towards 

24HR.

• 

To set the S output to detect continuously, day or night, 

independent of light level, turn the lux pot all the way to 

maximum, marked 24HR.

+

-

+

A

S

+

A

S

12V DC

mini

Opal

GJD 

Lighting

Controller 

SPECIFICATIONS

Coverage (max)

90° at 30m, equivalent to 625m²

Range

Adjustable 8m to 30m

Directional 

adjustment

±90° horizontal (180°), ±45° vertical 

Area adjustment 

(blanking)

Supplied with,1 foil label for near/

far beam blanking and 4 vertical 

opaque curtains for zone blanking

Lens

2 rows of 10 beams

Sensor

White light filter prevents false 

triggering when sunny

Ouput A (Alarm)

Open-collector transistor switch. 

12V, 25mA alarm current.

Output S (Sen-

sor, daylight)

Open-collector transistor switch, 

12V, 25mA alarm current

Output T (Tam-

per)

Volts-free, normally-open switch 

output

Tamper switches 

Case open and removal from wall

Power

9 to 15V DC

Current

4mA at 12V

Operating 

Temperature

-20°C to +55°C 

Protection

IP55, high-impact ABS housing, 

Conformal coated electronics 

(moisture and UV protection 

lacquer)

Dimensions

84 x 106 x 72 mm

Mounting 

Suggested height 3m

Cabling

0 to 200mm: standard, 4-core, 

7.0.2mm alarm cable

200 to 500m: 8-core, 16/0.2mm 

(use double cores)

Certifications

APPROVALS

The manufacturer declares that the product supplied is compliant 

with the provisions of the EMC Directive 89/336/EEC amended 

92/31/EEC for Electromagnetic Compatibility, and the Restriction of 

Hazardous Substances Directive (RoHS) 2002/95/EC. A Declaration 

of Conformity in accordance with the above directives is held on file 

with the manufacturer.

Copyright Notice

GJD Reserve the right to amend specifications without 

notice.

Copyright © 2010 GJD Manufacturing Limited

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