Invacare 211EX - Manual (Page 7)

7 PART NO. 1093845 VENTURE™
WARNING (CONTINUED)
DO NOT use a humidifier with the Demand Oxygen
Delivery Device.
DO NOT expose the Demand Oxygen Delivery Device
or system to water or any other liquids.
RADIO FREQUENCY INTERFERENCE
Most electronic equipment is influenced by Radio Frequency
Interference (RFI). CAUTION should be exercised with
regard to the use of portable communications equipment in
the area around such equipment.
SAFETY SUMMARY