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T h e   W A B   d i s p l a y   w i l l   t h e n   s h o w   " S a m p l e   Ta k e n "  
followed by "Analysing"

After a few seconds your breath sample will have been 
analysed and, if the breath alcohol level is below the pre-set limit, 
then "Pass" will appear on the WAB display and a coded signal will 
be sent immediately to the VBS in order to unblock the Blocking 
System. The RED LED will flash rapidly and extinguish confirming 
that the Blocking System has been unblocked *This status will be 
recorded by the VBS & the WAB with date and time.

You may now start your vehicle. (

*The specific time period in which 

you have to start your vehicle is programmed by the service/fitment 
centre and can be set to 5, 10, 20 or 30 minutes.)

Before driving off, you may wish to switch off your WAB by pressing 
and holding the small button until the WAB shuts down.  
Alternatively, the WAB will automatically shut down after a short 
period of time if no further samples are provided. 

PASS

FAIL

16:34:09    26°

16:34:09    26°

Sample Taken

Analysing

Inadequate

Sample

IF THE VBS FAILS TO UN-BLOCK  (Invalid breath sample)

1.

If the WAB displays "Fail" then it has detected alcohol in 
the breath at a level in excess of the preset limit. If you have 
observed the points shown in the "Before Providing a Sample" 
section of these instructions, then you have a breath alcohol 
level above the pre-set limit. The RED LED will flash rapidly, 
and the Blocking System will remain blocked, the RED LED will 
continue flashing and the vehicle will not start. This status will 
be recorded by the VBS & the WAB with date and time.

You should wait for 30 minutes and then provide a further 
sample, by which time your body may have metabolised the 
alcohol and reduced the level below the preset limit.

2.

If the WAB displays "Inadequate Sample" then one or more of 
the following could be the cause of the problem.

Incorrectly positioned mouthpiece
Insufficient length of blow (Volume)
Incorrect force of blow (Too hard or too soft)

Switch the WAB ON, when the display shows “Fit Mouthpiece, Take 
Sample” provide a breath sample as described on page2.

1. Switch the WAB ON, when the display shows “Fit Mouthpiece, Take Sample” follow the 

same procedure to provide a breath sample as described on page 2.

2.  The WAB analyses the breath sample as before and the VBS records the result.

Before starting the vehicle the RED LED on the Driver Change 
Button will be flashing indicating that the vehicle is blocked by the 
VBS (Vehicle Blocking System).

It is recommended that the VBS immobiliser is unblocked 

prior

 to 

turning on the vehicle ignition.
To achieve this, follow the procedure below:

DRIVER CHANGE 

BUTTON

DRIVER CHANGE 

BUTTON

RED 

LED

Fit Mouthpiece

Take Sample

Should the “Random Testing” option be selected at installation, while the vehicle is on route, 
the VBS buzzer will sound as a request for a new breath sample. (This will be randomly 
repeated at any stage of the journey)

RANDOM “ON THE ROAD” TESTING

Should no breath sample be supplied within a preset period, the buzzer will stop and the 
RED LED will start to flash at a faster rate continuously until a valid sample is presented.

NOTE :  Failure to provide a breath sample for analysis during random testing or 
providing a sample that exceeds the predetermined level, will not cause the vehicle 
to stop, however, failure to provide a breath sample or providing a sample that 
exceeds the predetermined level will cause a non event to be presented at the GSM 
output to be sent if the GSM module is connected.

DRIVER CHANGING

Should no breath sample be supplied within a preset time period, the buzzer will stop and 
the RED LED will start to flash at a faster rate continuously until a valid sample is presented.

Should a new driver be required to take over driving responsibilities, 
the following procedure needs to be followed:
1.  As the new driver takes over, the reset button must be pressed.
2. The VBS buzzer will sound to request a new breath sample. 
3. Switch the WAB ON, when the display shows “Fit Mouthpiece, Take Sample” follow the 

same procedure to provide a breath sample as described on page 2.

4. The WAB analyses the breath sample as usual, the VBS records the result and the 

random test timer is reset.

NOTE :  Failure to provide a breath sample for analysis during driver changing or 
providing a sample that exceeds the predetermined level will cause the vehicle to 
remain blocked, moreover, will result in a non event being presented at the GSM 
output to be sent if the GSM module is connected.

OPERATING INSTRUCTIONS

BASIC MAINTENANCE

Cleaning the WAB

If and when required, simply wipe over with a lightly dampened cloth.

NOTE: Please do not use chemical solvents, abrasives or excess water as these 
could damage the case material, and possibly the internal sensors.

The battery is re-charged via the socket on the left side 
of the instrument. When necessary, insert the 
connector from your 12V charger into the socket and 
insert the other end into the cigarette lighter in your 
vehicle. If switched on while charging the battery 
condition indicator will cycle from full to empty whilst 
the battery is still being actively charged.

12/24V

Battery Charging

Downloading Recorded Results

The WAB keeps a backup of all recorded results which 
can be accessed by using Download software and the 
USB cable direct to a PC. This facility will need to be 
requested from your Service/Installation Centre.

RED 

LED

D

A

O

L

N

W

O

A

T

A

D

TTE

BA

RY CHARG

ING

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