SImx LHT0331 Installation Instructions Download Page 2

ASSEMBLY INSTALLATION INSTRUCTIONS

*** IMPORTANT ***

This light fitting should be installed by a registered electrician

Motion Detector Head Adjustment

Detection Range:

WALK TEST PROCEDURE

MASKING THE SENSOR LENS

KNOB SETTINGS

TIME CONTROL MODE

LUX Knob Setting

Recommended installation height is 2.5m above ground, 

the maximum detection range about 12m and at angle of 

about 80 degrees.  Up to 3m range, detection angle is

 about 180

º.

Adjust the sensor to  point in the required direction. 

Adjust time knob to lowest setting.  

Turn the power to the unit on. 

The lamp will illuminate for approximately 

30-60 

seconds.  

The unit is now in Test Mode.  Walk across the detection area to 

determine the trigger zone and adjust aiming of sensor to suit.  Left unactivated for 60 seconds, the light will switch to 

AUTO Mode, confirmed by red LED scrolling left and right.

To restrict the sensor coverage, preventing detection in unwanted areas, mask the sensor lens using the masks provided 

in the accessory pack.

• When setting the Lux knob at “MOON”, PIR

 activation will only operate in the dark.

• When setting the Lux knob at “SUN”, PIR

 activation will operate at any light level.

TIME Knob Setting

• You can set the time knob from 3 sec to about 7 min, 

LED floodlight will turn ON the lamp, for the time duration 

set after each detection movement.

Toggle the internal wall switch 3 times (off/on off/on off/on) within 3 seconds.

A single flashing red LED at the top of the sensor head indicates Time Control Mode. 

The unit 

will now illuminate for a user defined time between 1 and 8 hours. The time can be set by rotating the 

centre adjustment knob as required. (The adjustment knob is identified by the letter 

inside a circle.) 

Do not adjust this setting if you do not wish to use the Time Control Mode facility.

This time adjustment is preset to 1 hour. Please note: Fully clockwise is 8 hours, fully anticlockwise is 1 hour.
After the defined period has elapsed, the unit will return to Sensor Control Mode and operate as previously set up and the 
three scrolling LED's will illuminate from left to right.

Time Control Mode

 is different to Manual Control Mode in that it will NOT reset to Sensor Control Mode at dawn, it will 

repeat each night until reset by the user. To cancel Time Control Mode, toggle the internal wall switch once (Off/On) within 

one second. The unit will turn to Sensor Control Mode indicated by the scrolling LEDs. 

The detector head can be 20º turned left or right by hand, 

it can be tilted 60º downward.
Do not use the adjuster knobs to turn the detector head.

Note: 

Make sure sensor head is 

positioned with control knobs 

facing towards the ground to 

maintain IP rating.

3m

2.5m

12m

180

This light fitting is rated to IP44. This means that it is suitable for use in 

sheltered exterior locations.  Please ensure the desired location does not 

exceed this rating.

 

When deciding on location of your light fitting, be aware that PIR sensors are 

more sensitive to movement across the detection zone, and less sensitive to 

movement towards the sensor.

For your information, the top section of the lens 

covers long range detection, the bottom covers 

short range. Similarly the left and right lens 

sections cover the left and right detection areas 

respectively.

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