Accuracy and Sensor Technology

One key difference between police breathalyser devices and consumer models is accuracy. Law enforcement breathalysers use advanced fuel cell sensors for greater precision. These sensors provide consistent results and reduce false positives, making them ideal for legal enforcement. Some police models also use infrared spectroscopy. This technology improves alcohol detection and minimises interference from other substances.

Calibration and Maintenance

Police breathalyser devices need frequent calibration to stay accurate. They follow strict government regulations. These devices receive regular maintenance and get checked against controlled alcohol samples for reliability. Consumer breathalysers also need calibration but require it less often. They may not meet the same strict standards as law enforcement models. Some high-end consumer breathalysers provide automatic recalibration alerts. This feature helps users maintain accuracy, but these devices still do not match police standards.

Legal Admissibility

Police breathalyser devices meet legal standards, so courts accept their results as evidence. These devices follow specific regulations and undergo certification. Most consumer breathalysers estimate blood alcohol content (BAC). However, courts do not consider them legally admissible in most jurisdictions.

Cost and Accessibility

Due to their advanced technology and strict regulations, police breathalyser devices cost much more than consumer models. Consumer breathalysers are affordable and widely available. They help individuals monitor alcohol levels and make responsible choices. Police-grade devices can cost thousands of dollars. Some high-quality consumer models also use fuel cell sensors. These models offer a balance between affordability and reliability. They appeal to users who prioritise accuracy.

Sources:

Breathalyser Technology Insights 
Alcohol Testing Standards