SImx LHT0268 Installation Instructions Download Page 2

This light fitting only operates when the PIR sensor is activated by heat movement within its detection zone.  Once power is 

connected, the unit requires approx. 60 seconds to warm up.  

Do not commence any walk tests until this has occurred.

CALIBRATION

The TIME adjustment has a minimum of approx. 30 seconds (counter clockwise rotation to the end) which it should be set to 

for walk testing the unit (Fig D). Adjust this setting clockwise to the preferred duration the light is activated for when it detects 

movement. The maximum clockwise setting will be approx. 6 minutes. The timer will restart each time the sensor detects any 

new movement.
The LUX adjustment sets the acceptable amount of light present before the unit will start detecting. Rotating the dial clockwise 

to the end will set it to full daylight operation. Use this setting for walk testing the unit (Fig D). Fully rotating counter clockwise 

will set the unit to activate after dark only. 
The PIR sensor has a 140° detection angle. This detection angle can also be aimed 90° left or right by pivoting the PIR cover 

where it joins the main housing. 
The lens mask supplied can be used when needed for restricting detection angles of the PIR (Fig E). Removing the largest 

centre segment provides a 40° detection area, while removing all segments provides maximum 140° angle. The mask clips 

into place. Remove one segment at a time, aim, and check in walk test mode. Continue removing segments until correct 

coverage is achieved.

Time/Sensitivity Adjustment

INSTALLING YOUR SENSOR LED II LIGHT

This light fitting is rated to IP44. This means that it is suitable in areas which may receive light rainfall. Please ensure the 

desired location does not exceed this rating.

Switch off the power supply before commencing electrical work.

Using a flat head screwdriver, carefully lever the side tabs to separate the mounting base from the 

main housing (Fig A). 
Pierce the power entry grommet on the mounting base and slowly draw a round mains power 

cable through the power entry hole. Recommended use of 1.5mm

2

 - 2.5mm

2

 wire  

for installation.
Firmly secure the base to the wall or ceiling using the mounting screws provided. Mounting holes 

located in the base are at 60mm centres.
Wire the cable to the terminal block, ensuring accurate polarity. Failure to do this correctly will result 

in irreparable lamp and sensor failure. A terminal for Earth parking is provided if required. Locate the 

main housing over the base and push together until it ‘clicks’ into finished position (Fig B).
Adjust the base pivot to orientate the fitting with the sensor adjustors pointing downwards.
Tighten thumb screw to secure. Aim spotlight head to suit the locations.

Fig D 

Fig E 

Minimum On Time 

setting

Maximum LUX 

setting

Fig A

Fig B

Fig C 

“click”

“click”

(60˚ left & right- 

2 spot pan together)

124mm

135mm

88mm

30˚

30˚

50˚

 

PIR LENS MASKING

The purpose of the lens mask is to block out 

areas not desired for detection. Apply to PIR 

lens as required for your location.

Care and consideration should be taken when the unit is located close to property boundaries, to avoid unnecessary spill 

light or glare to neighbours, and to avoid unwanted activation by passing pedestrians or vehicles. 

Special Note

SUPERIOR ADJUSTMENT VERSATILITY

Dual Mounting Options

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