The Alcovisor Mercury Alcohol Breathalyser (Includes software & USB cable). This unit offers superb accuracy and is approved for Police use (US NHTSA & DOT Approved). The Mercury uses a long term stability platinum electrochemical sensor. This gives the device superb levels of accuracy which is the reason it is adopted by Police forces around the world. It offers an array of user friendly functionality including colour TFT touchscreen, 65,000 test record storage with 20 fully customisable data fields (name, shift, department etc). All information is easily downloadable to PC for reporting and backup purposes via the optional PC software.