Profile: Harrell Medical, Inc is a retailer of medical supplies and equipment, including diagnostics, instruments & safety items. Our AM1 is an electronic peak flow meter that allows the measurement of lung function parameters. Our portable meter permits patients to monitor their peak flow values at home in which the values are downloaded at patient visits using the asthma monitor software (AMOS). Our peak flow values are used in helping subjects to recognize asthma exacerbations, in defining action plan items & in recommending treatment in the ER and physician's office.