Omron Healthcare MC-509N User Manual

• Use of this thermometer is not intended as a substitution for consultation 

with your physician.

• This thermometer is intended to be used in human ears only.

• Use only Omron

®

lens covers for this specific unit.

• For proper hygiene, DO NOT reuse the same lens covers.

• Replace the lens cover when it is affected by earwax 

or other body fluids.

• Earwax in the ear canal may cause a lower temperature reading. 

Make sure patient’s ear canal is clean to ensure an accurate reading.

• Handle the thermometer with care. Improper handling may 

affect temperature accuracy.

• Keep the unit and lens covers out of the reach of children.

• Use your unit in room temperature. Extremes in environmental 

temperature may affect the accuracy.

• Store unit at room temperature when possible. Keep thermometer 

at room temperature for at least 30 minutes before use.

• Remove unit if pain is noted during use.

• DO NOT use if ear infection is present.

• DO NOT use right after swimming or bathing as this may injure ear 

tissue as well as affect the accuracy of the temperature.

• DO NOT take apart, repair or change any parts of the unit at any time.

• DO NOT get the unit wet or pour any liquid onto any portion of the unit.