page 3
3. Wiring & Fixing
1. Wire the products using the diagram opposite.
2. To switch from more than one position simply wire two or more units in parallel using the Live,
Neutral, Switched Live and manual switch wires only.
3. The detector should be sited so that the occupants of the room fall inside the detection pattern
shown in section 5, at a recommended ceiling height of 2.8m. Note that the lower the sensor is
installed the smaller the detection range will be, subject to the parameters shown on the diagram.
4. Avoid direct sunlight entering the sensor.
5. Do not site within 1m of forced air heating or ventilation.
6. Do not site within 1m of any lighting.
7. Do not fix to a vibrating surface.
8. Mount using one of the two options overleaf.
9. Connect the sensor via the terminal blocks. Live supply to the L terminal; load to the L/OUT
terminal; Neutral to the N terminal on the green terminal block. External switch connections to the
switch terminal.
10. Use a small screwdriver to set the LUX level adjuster fully anti-clockwise, the time to minimum
(fully clockwise) and the sensitivity to maximum (fully anti-clockwise).
11. Power the unit up—the load should come on immediately.
12. Vacate the room or remain very still and wait for the load to switch off (should take no more than 2
minutes).
13. Check that the load switches on when movement is detected.
14. The LUX thumbwheel determines the ambient light level at which the lights turn on.
15. Select the time using the adjuster, fully anti-clockwise is the maximum.
16. Using the UHS or UHS3 infra-red handset: the override on button turns the unit on permanently;
the override off button turns the unit off permanently; the cancel button cancels the overrides.
When an override is selected an LED will flash inside the unit. The UHS handset can also be used
to set the lux levels—see Section 4.3
Absence detection
17. To use absence detection a retractive (momentary) switch must be connected between the 2
terminals on the diagram. Note that this will be switching mains voltage.
18. The unit ships with presence detection as default. To change to absence detection, press and
release the external switch 5 times within the first minute of power up. The LED will turn on solid
for 30 seconds to indicate absence mode has been selected.
19. To change back to presence detection, repeat the above procedure—the LED will flash for 30
seconds to indicate presence mode has been selected.
Note: the above adjustments can also be made using the DD-LCDHS handset instead of the manual
adjusters or external switches. See section 4.
(8 pages)
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