CAIRE FreeStyle Manual page 33

Connect the opposite end of the DC power cord to automobile or other DC accessory outlet.
Turn on your motor vehicle.
Ensure the green light on top of the Universal power supply is illuminated. This indicates that
the power supply is receiving power from the outlet. If the green light is not illuminated,
disconnect the power supply from the DC outlet, restart the motor vehicle, and then reconnect
the power supply to the DC outlet.
Green Light
Portable Oxygen Concentrator
Figure 6.7: Insert DC Adapter to DC Outlet
Figure 6.8: Green Light on Universal Power Supply
MN220-1 B 33