IMPORTANT INFORMATION If you do not follow the instructions for use your test results may be inaccurate and your warranty may become void. IMPORTANT NOTE: YOU MUST WAIT AT LEAST 20 MINUTES AFTER YOUR LAST ALCOHOLIC DRINK BEFORE USING ALCOLIMIT Protector OTHERWISE INACCURATE READINGS OF YOUR BLOOD ALCOHOL LEVEL WILL BE DISPLAYED ON THE SCREEN. PARTS OF YOUR BREATHALYSER AlcoLimit's Flow Control Technology checks the flow rate of your breath.