Answer
Sep 18, 2025 - 04:46 PM
Red light is used in SpO2 measurement because it is absorbed differently by oxygenated and deoxygenated hemoglobin in the blood. In the Ear SpO2 Probe for Venni VI-60D, this property enables the device to accurately determine oxygen saturation by analyzing the varying absorption of red and infrared light through the ear tissue.
