GE Healthcare B30 User's Reference Manual page 43

System description
Battery (A) is missing
B
In the front panel: mains or external DC power
Submenu. Selecting an alternative marked with this symbol in a menu opens
a new menu.
The monitor is connected to Network
A blinking heart next to the heart rate or pulse rate value indicates the beats
detected.
A lung next to the respiration rate value indicates that respiration rate is
calculated from the impedance respiration measurement.
Gas inlet
Gas outlet
Do not reuse.
Use by. Indicates the last use day.
Date of manufacture
Do not immerse the sensor in liquids.
2-17