Introducing the Defender Breathalyser, brought to you by AlcoLimit! This lightweight, yet sturdy breathalyser provides breath alcohol test results you can rely on. The Defender includes professional grade, Australian Standards AS3547 approved, electrochemical Fuel Cell Sensor technology to provide high quality, 3 decimal place accuracy. The team at AlcoLimit have developed this unit with a large digital display which is both simple and easy to use, with a shock resistant plastic casing. The in-built safety and precision technology, Flow Control, checks the flow rate of your breath to ensure the sensor receives an adequate air sample before providing you with a reading. Another great feature of this breathalyser is the Intelli-sensor Recognition Technology, which checks the sensor condition every time you use the unit! The stability of the sensor is analysed as well as the level of alcohol residue built-up on the sensor - An indication will also be given if the sensor needs recalibration.