This easy to use, precise Lung Monitor is designed to record key lung function parameters for those with chronic respiratory conditions. This device helps a multitude of patients including those with cystic fibrosis and transplant patients. This monitor can be used as a home monitor due to its simple use setup and large, easy to read display. The Lung Monitor measures FEV1, FEV6 and the ratio and displays % of Personal Best FEV1. Color zones are then set to the personal best FEV1. The Lung Monitor uses electronic records keeping things organized and systematic.