The main difference between a 2-digit and 3-digit breathalyser is the resolution of the reading, not necessarily the sensor quality.
2-Digit Breathalyser
Displays results to two decimal places, for example:
0.04
0.05
This provides a general indication of blood alcohol concentration (BAC) and is suitable for basic personal use.
3-Digit Breathalyser
Displays results to three decimal places, for example:
0.041
0.053
This offers a more detailed reading and allows you to see smaller changes in alcohol levels over time.
Does 3 Digits Mean More Accurate?
Not necessarily.
Accuracy depends primarily on:
1. The sensor type (fuel cell vs semiconductor)
2. Calibration status
3. Overall device quality
A 3-digit breathalyser may simply display more decimal places, while the underlying accuracy could be similar to a 2-digit model. However, higher-end breathalysers often combine a fuel-cell sensor with 3-digit resolution, making them both more precise and more accurate
Should you need further assistance please contact us at support@andatech.com.au.