OXYBLOOD-3 OLED Description Pulse oximeter. Small, low-power medical device for detecting oximetry and heart rate values. How to use 1. Insert two AAA batteries into the battery compartment in the correct direction. 2. Replace the lid. 3. Insert the patients finger into the rubber-covered sensor (make sure the finger is in the correct position), then let the sensor close onto the finger. 4. Press the ON button on the front panel. 5. Do not move your fingers while using the pulse oximeter. 6. Press the ON button on the front panel to change the display orientation. 7. Read the detected data from the display. 8. If no signal is detected, the device will automatically turn off. 9. Replace the batteries when the display indicates that they are low. When the finger is connected to the pulse oximeter, the nail surface should be facing upwards. Note: It is recommended to use medical alcohol to clean the contact rubber inside the pulse oximeter before and after each use. Code: P0_OXYGEN_OLE