Alert J4X electronic breath tester

In stock
can be shipped within 5 days


Price incl. VAT, delivery included


The new EN 15964 certified Alert J4X breath alcohol tester provides accurate results in seconds using ACS' newest electrochemical sensor and LCD display.

 Ease of operation 

With one button to initiate operation and an iconic display to guide its sequence, the ALERTJ 4X indicates when it is ready to take the test. The subject simply exhales into the mouthpiece and the instrument automatically determines the breath alcohol concentration. If a proper sample is not provided, an icon indicates that a retest is necessary.


The ALERT J4X uses an electrochemical sensor that is specific for alcohol - the standard for portable evidential breath testers used by law enforcement. This sensor provides quick response and rapid recycle between tests. The long term stability of the sensor is assured by routine calibration with a breath alcohol simulator.


The breath alcohol test results are presented on the LCD in a three digit measurement format that is selectable for each jurisdiction. A LED in the mouthpiece port is colour coded to provide a visual indication of the range. The ALERT J4X also provides a last test recall feature for certainty.

Fit for purpose

The ALERT J4X is powered by two AA alkaline batteries for normal operation. An accessory DC adapter provides auxiliary power to the sensor heater for operation at lower temperature ranges.

Ready to use

The ALERT J4X comes with instruction manual, carry case, DC adapter and a supply of mouthpieces.

Limited warranty

ALERT J4X professional alcohol testers are warranted to be free from defects in workmanship and material for one year from the date of shipment.
Alcohol Countermeasure Systems agrees to replace or repair any unit or part that in its judgement is found to be defective, providing that the defect has not been caused by misuse or mishandling. Units in warranty must be properly packaged and shipped prepaid factory authorized service facility.

* All breath alcohol testing devices require periodic maintenance and calibration to ensure proper working order.



Dimensions, cm 13.5 x 5.9 x 3.0
Weight, grams 115
Sensor ELECTROCHEMICAL (fuel cell)
Specificity Alcohol only, no response to ketones or hydrocarbon
Ambient temperature -20oC to +50oC
Purge cycle (Initial test) < 5 sec
Breath sample 5 second moderate and continuous breath sample
Analysis time < 30 sec
Recycle (Recovery) time 5 sec
BAC readout format g/dL, g/L, mg/dL, mg/L, μg/dL, μg/L
Range of measurement 0.00 – 5.00 g/L (0.000 – 2.50 mg/L)
Accuracy ± 5% @ 1 g/L
Display 3 digit LCD
Last test recall No
Battery 2 x AA
Number of tests / charge > 1000 (new batteries)
Mouthpiece Disposable round mouthpiece (95-000250 or similar)
Calibration Wet bath simulator
Origin Developed and manufactured in Canada
Manufacturer certifications TS 16949, ISO 9001, ISO 14001

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