Manufacturer of non-invasive cardiorespiratory diagnostic and monitoring systems for the early prevention, detection and treatment of heart and lung disease. Developer of cardiorespiratory diagnostic and monitoring software also. Software runs on an independent platform. Products are sold to hospitals, clinics, and physician's offices. The bulk of revenue is derived from activity in the medical industry. International sales but percent of sales unknown. Products include resting energy study patient canopy systems, cardiopulmonary exercise systems monitors, exercise capacity assessment systems - Advanced System 2001(tm), gas exchange systems - Critical Care Management System(tm), pulmonary function testing systems, Body plethysmography systems, cardiorespiratory diagnostic and monitoring software, cardiovascular diagnostic equipment, gas exchange calibrators.