Eterna PIR110WH Safety And Installation Instructions Download Page 2

READ THIS FIRST:

Check the pack and make sure you have all of 

the parts listed on the front of this booklet. If not, 

contact the outlet where you bought this product.

This product must be installed by a competent 

person in accordance with the current building 

and IEE wiring regulations.

As the buyer, installer and/or user of this product 

it is your own responsibility to ensure that this 

sensor unit is fit for the purpose for which you 

have intended it. Eterna Lighting cannot accept 

any liability for loss, damage or premature failure 

resulting from inappropriate use.

If in any doubt, consult a qualified electrician.

Switch off the mains before commencing 

installation and remove the appropriate circuit fuse 

or lock off MCB.

This unit is suitable for outdoor use.

This product is designed for permanent connection 

to fixed wiring: this must be a suitable circuit 

(protected with the appropriate MCB or fuse).   

Before making fixing hole(s), check that there are 

no obstructions hidden beneath the mounting 

surface such as pipes or cables.

When making connections ensure that the 

terminals are tightened securely and that no 

strands of wire protrude. Check that the terminals 

are tightened onto the bared conductors and not 

onto any insulation. 

This fitting is double insulated and does not 

require an earth (however there is an earth post 

for earth continuity).

This product is not intended to be used by children 

and persons with sensory, physical and/or mental 

impairments that would prevent them from using 

it safely.

You are advised at every stage of your installation 

to double-check any electrical connections you 

have made. After you have completed your 

installation there are electrical tests that should be 

carried out, these tests are specified in the current 

IEE wiring and building regulations. If in doubt, 

consult a qualified electrician.

INTRODUCTION:

The PIR (passive infra red) sensing device 

continuously scans a preset operating zone and 

immediately switches  the load-light on when it 

detects movement in that area.

This means that whenever movement is detected 

within the range of the sensor the load-light will 

switch on automatically to illuminate whatever area 

you have selected to light. While there is movement 

within range of the unit the load light will remain on. 

Where to fit your PIR sensor

To achieve best results we suggest you take the 

following points into consideration:

General Information and Introduction:

Installation and Setting the Controls:

INSTALLATION:

 

When installing the PIR sensor please refer to Fig.3 

below.

1.  Switch off the mains before commencing 

installation.

2.  Unscrew the junction box cover, screw and remove 

cover taking care not to lose the rubber gasket. 

(See Fig. 3 above).

3.  Fix the unit to the mounting surface with the 

screw supplied, we recommend the unit should 

be fixed a minimum distance of 2.5 metres above 

the ground, noting the mounting direction on the 

plastic cover. 

4.  Connect the power cable and load cable to the 

terminal block as show in Fig.3. 

 

Note:

 3 core 6A/230VAC cable, not less than 

1.5mm

2

 diameter not included. The cable must 

pass through the rubber gasket.

5.  Close the cover and tighten the screw, not 

forgetting to replace the rubber gasket.

6.  Restore mains power adjusting the PIR Sensor to 

desired working requirements.

UNDERSTANDING THE CONTROLS: 

(Referring to Fig.4 below)

ADJUSTING THE DURATION TIME:

 the length of 

time that remains switched on after activation can 

be adjusted from (10±5) seconds to (4±1) minutes; 

rotating the TIME knob from (+) to (-) will reduce the 

duration time.  

Note: 

Once the load-light has been triggered by the 

PIR sensor any subsequent detection will start the 

timed period again from the beginning.

ADJUSTING THE LUX CONTROL LEVEL:

 the 

lux control module has a built-in sensing device 

(photocell) that detects daylight and darkness. 

Rotating the LUX knob clockwise from light (

Ô

) to 

dark (

Ç

): 

    The (

Ô

) position denotes that the unit can work at 

day and night.

    The (

Ç

) position denotes that the unit only works 

at night. 

You can set the PIR to operate the unit at the desired 

level by adjusting the LUX knob.

SETTING THE CONTROLS:

1)  Put the LUX control knob to light (

Ô

) position, 

turn the power on and wait half a minute for the 

control circuit to stabilize. At this stage ensure that 

the TIME control knob is set at minimum duration 

time (-) position (rotating the TIME knob clockwise 

to stop-position). The load-light will now switch on 

and remain on for about 30 seconds.

2)  Direct the sensor toward the desired area to be 

scanned by adjusting the swivel joint on the sensor 

arm.

3)  Have another person move across the centre of the 

area to be scanned and slowly adjust the angle of 

the sensor arm until the unit senses the presence 

of the moving person, causing the load-light to 

switch on (refer to Fig.2A opposite).

4)  Adjust time control to required setting.

5)  To set the light level at which the load-light will 

automatically switch “on” at night, turn the LUX 

control knob from daylight (

Ô

) to night (

Ç

). If 

the load-light is required to switch on earlier, e.g. 

dusk, wait for the desired light level, then slowly 

turn the LUX control knob towards daylight while 

someone walks across the centre of the area to be 

detected. When the load-light switches on, release 

the LUX control knob. You may need to make 

further adjustments to achieve your ideal light level 

setting.

Important: To avoid dust build-up and ensure 

proper functioning of the PIR Sensor, please wipe 

the sensor lens lightly with a dry cloth every 3 

months. 

Do not mount on a surface that has vibration

Ideally the PIR sensor should be mounted 1.8 to 2.5 

metres (6 to 8ft) above the area to be scanned (refer 

to Fig.1 below).

To avoid damage to the unit do not aim sensor 

towards sun.

Avoid positioning the sensor unit adjacent to a 

bright light source which may prevent the unit from 

operating when the lux control is set to operate in 

dark conditions.

Avoid nuisance false triggering by directing sensor 

away from:

   Trees and shrubs 

   Reflective surfaces such as smooth white walls

   Swimming pools 

   Heat sources such as boiler flues

The PIR sensor scanning specifications (approximately 

12 metres at 110°) may vary slightly depending on the 

mounting height and location. The detection range of 

the unit may also alter with temperature change. 

Before selecting a place to install your PIR sensor 

you should note that movement across the scan area 

is more effective than movement directly towards 

or away from the sensor (refer to Fig.2A below). If 

movement is made walking directly towards or away 

from the sensor and not across the sensor apparent 

detection range will be substantially reduced (refer to 

Fig.2B below).

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Fig 1

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Fig 2B

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LUX

TIME

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