The core activity of Masimo is the development and manufacture of medical monitoring systems and solutions, particularly in the field of non-invasive patient monitoring. This includes products and services such as: brain function monitoring, regional oximetry (O3), hemodynamic monitoring, LiDCO monitoring system, Continuous Noninvasive Arterial Pressure, remote monitoring and notification, patient remote monitoring, capnography and multigas monitoring. The company also offers OEM solutions (Original Equipment Manufacturer) to other companies that manufacture medical devices and systems.