Nellcor SpO2 Upgrade kit, consists of a Nellcor SpO2 circuit board, an OEM part manufactured by a third party supplier; and an integral component of the Nellcor SpO2 device. || Controlled infrared heat to neonates who are unable to thermo-regulate based on their own physiology with integrated monitoring feature used for continuous noninvasive monitoring of functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate (measured by a SpO2 sensor).