The Andatech ALS-SRT AlcoSense Surety Professional Breathalyser is a reliable and accurate device designed for mass testing. With its 3 decimal place reading, you can trust its precision in measuring alcohol levels. The flow control feature ensures consistent and accurate results, while the auto power off function helps conserve battery life. The battery low indicator lets you know when it's time for a replacement, and the test counter keeps track of the number of tests conducted. The memory function allows you to store and review previous test results. This breathalyser is designed to withstand extreme temperatures, ensuring its performance in various environments. It also offers multi-language options for user convenience. Additionally, it is PC and printer compatible, allowing for easy data transfer and printing of test results. The calibration reminder ensures that the device remains accurate over time. Overall, the Andatech ALS-SRT AlcoSense Surety Professional Breathalyser is a reliable and feature-packed device that provides accurate and consistent alcohol level readings for professional use.