Alert J4X


The Alert J4X is an industry-leading breathalyser favoured by law enforcement worldwide. Using a highly sensitive electrochemical fuel cell sensor, the Alert J4X guarantees accurate results in just 30 seconds. Lightweight and portable with a one-click testing system, the Alert J4X breathalyser couldn't be easier and more convenient to use.


Key Features

  • Simple single button test for easy use
  • Quick results in less than 30 seconds
  • Lightweight and portable
  • Trusted industry-standard technology
  • Highly sensitive electrochemical sensor for accuracy
  • Only one calibration required per year
  • Convenient calibration reminder


Size 150mm x 88mm x 35mm
Weight 300 grams
Sensor Electrochemical fuel cell
Response Alcohol only – no response to ketones or hydrocarbon
Ambient Temperature -20°C to 50°C
Initial Test 5 seconds
Breath Sample 5 second moderate and continuous breath sample
Analysis Time <25 seconds
Recovery Time 5 seconds
BrAC Display Format mg/dL, g/dL, g/L, mg/L, µg/dL, µg/L
Range of Measurement 0.00 to 0.50 g/dL
Accuracy ± 5% at 0.10 g/dL
Display Three digit LCD
Battery 2xAA batteries
Last Test Recall Yes
Number of Tests <1000 tests
Mouthpiece Round (model: 95-000250)
Calibration Alcohol/Water Simulator


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