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Battery Cover 

(Back)

Test result is displayed to the 3rd decimal point for % BAC reading

             Battery Low, replace with new batteries

Display has dual Colour backlight. If the results are above 0.050% BAC 
backlight will turn red to give notice. See Error notification section. 

Sensor

Advanced Full Cell Sensor Engine

Accuracy 

±0.005% BAC at 0.050% BAC

Detection Range

0.000 ~ 0.400% BAC

Warm-up Time

15 ~ 35 seconds

Response Time

3 ~ 22 seconds

Dimension

111mm x 35mm  x 24mm

Weight

55g (77g batteries included)

Power Supply

Two 1.5V, AAA size Alkaline batteries

Working Temperature

50C ~ 400C 

Calibration*

Every 6 months or after 500 tests

* To maintain the unit to Australian Standard requirements

calibration every 6 months is required.

Error Message

Cause & Action

If the result is higher than 0.050% BAC, the 

WARN signal will 

display along with an 

ALARM sound.

If the result is above 0.400% BAC the 

HOT signal will display 

along with an 

ALARM sound.

Once the unit has performed 500 tests, the 

CAL signal will 

display. The unit will still operate but is required to be returned 

for calibration. See Recalibration & Service section below.

If the battery voltage is too low to perform a test, the unit will 

automatically turn off after displaying the 

BAT signal. Replace 

the batteries, two 1.5V AAA Alkaline batteries are required.

If the user didn’t exhale steadily and continuously during the 

test for 3-5 seconds, the 

FLO signal will display. Push the power 

button to perform another test.

When the ambient temperature is out of the working 

temperature of 50C ~ 400C, the unit displays 

OUT and will 

automatically turn off. Keep the unit within the recommended 

temperature range.

*** 

Note: If any of these errors occur, the LCD backlight turns RED to give

a warning notice.

Breath Alcohol 

Concentration (BAC)

Digital Display

0.000-0.049%

% BAC displayed on screen 

0.050-0.400%

% BAC displayed on screen and RED LED screen

0.400 upwards 

‘HOT’ will appear on the screen indicating the 

maximum level has been reached.

Your % BAC will be displayed on the screen for 20 seconds after which the 

breathalyser will automatically turn off. 

Specifications

Breathalyser Components

Display

Contents:

1x Breathalyser
3 x Mouthpiece
2x AAA batteries
User Manual

Operating Instructions

1.  Insert mouthpiece into the mouthpiece inlet

2.  Push the On / Off Power switch. The display lights up and you hear a welcome 

sound. The number of uses will display on the screen followed by a warm-up 
countdown which takes approximately 15 - 35 seconds.

3.  You will hear 2 beeps and BLO will be displayed on the screen when it is ready 

for use. Take a deep breath and blow in a steady and continuous stream into the 
mouthpiece. Keep blowing until you hear a double click, at this sound you can 
stop. You will need to blow in 1 continuous breath for approximately 5 seconds 
for it to register with the breathalyser. 

Note: If inadequate airflow is received it will display FLO on the screen. You will need 

to start the testing again, ensure breath is in 1 continuous and steady blow. 
Ensure the ‘Breath out’ hole is not covered during testing as this will affect the 
airflow. 

4.  A circling line will appear on the display while your breath sample is being 

analysed. Your % BAC result will then be displayed on the screen. 

Error Notification

Pro-line Online Webstore

Available on our online webstore, we stock replacement mouthpieces, plus an range 

of other innovative Pro-line products.

Browse our store at: www.prolineaustralia.com.au

Recalibration & Service

Your Pro-line breathalyser uses a fuel cell sensor to measure breath alcohol levels 

and will require recalibration. The calibration period for your Pro-line fuel cell 

breathalyser is 6 months or 500 uses, whichever occurs first. If you receive erratic

or high readings your breathalyser may need recalibration. Do not attempt to

service it yourself. 
To maintain the breathalyser to Australian standards calibration is required

every 6 months. 
In order to keep your breathalyser in good working condition we recommend that you 

blow into it at least once a month to ensure the sensor does not dry out. 

For recalibration service, please visit:

www.prolineaustralia.com.au/bt-calibration

Mouthpiece

Breath Out

(do not cover)

Digital LCD 

Display

On/Off Power 

Switch

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