Frequently Asked Questions on Ear Thermometers


How do ear thermometers work?

Digital Ear Thermometers measure infrared energy radiated from the eardrum and the surrounding tissue. This energy is collected by the lens and converted to the correct temperature value.

Is it safe to fully insert the thermometer probe in the ear of little ones?

Yes, the probe of ear thermometers is too short to reach the eardrum. The ear canal of babies and small children is smaller than the probe of the thermometer so it cannot reach the sensitive parts of the ear.

Are there any side effects of infrared ear thermometers?

No, Ear thermometers does not send out any waves or heat at any time. It only acts as a receiver of heat. If the ear is inflamed or an ear infection is present, it is recommended the measurement be taken in the other ear or a standard digital thermometer should be used orally, underarm or rectally is appropriate.

Which ear should be used to measure body temperature?

Generally, there are no significant differences in ear temperatures. It is recommended to use the ear that that gives you a higher reading.

Why do you get different results from left to right ear?

Temperature can vary slightly between left and right ear because of the amounts of dirt or earwax present or due to individual variations. 

The position of the probe tip during measurement can have an influence on the results. It is very important to straighten the ear canal and insert the probe tip comfortably and completely in the ear canal to ensure accuracy.

Does earwax influence the results of Ear Thermometers?

Small amounts of ear wax are no problem as they transmit the temperature radiation but large amounts may cause inaccurate readings.