background image

EAR THERMOMETER

Model TH839S

1883239-3B

Thank you for purchasing the ear thermometer TH839S. 

This thermometer is designed with an advanced infrared and ambient temperature compensation technology for instantaneous 

self-diagnosis and accurate temperature measurements. Do not use this device for Live & Dead decision or Safety related 

applications. Please consult with doctor if you have health concerns.

If the thermometer detects a body temperature     37.5°C (or 99.5°F), three short beep sound will follow one long beep 

sound to warn the user for potential fever.

1. In 

“Power Off”

 mode, press and hold the “Measure” button.

2. While holding it down, press the “ON/MEM” button. 

3. Continue to press and hold the “Measure” button for 3 seconds after the power is on. The icon “°C” will be switched to icon “°F” .

You can also use the same process to change the LCD display from °F to °C.

1. Gently squeeze the opposite ends of the thermometer to pull off the probe cap. 

NOTES:

• Do not use force to remove the cap.

• Always use a new and undamaged probe cover.

• Make sure the ear canal is clean.

2. Place a new probe cover on the connection ring. 

NOTE: Make sure to place the 

“Adhesive Side”

 of probe cover 

“Upward.”

4. Push the connection ring until the “Click” sound. This means the probe cover has been installed 

successfully.

NOTE: If the probe cover did not connect firmly, the “     ” icon will flash on the LCD screen. Please 

check the setting of the probe cover again.

3. Align the probe with the center of probe cover. 

Insert the probe into the probe cover on the connection ring. 

ATTACHING A PROBE COVER

1. Press “ON/MEM” button to power on. 

The thermometer is ready for use after the ear icon stop flashing and two short beep sound.

2. Gently pull the ear back to straighten the ear canal and snugly position the probe into the 

ear canal, aiming towards the membrane of the eardrum to obtain an accurate reading.

3. Measuring the ear temperature: Use the index finger to trigger. Press the “Measure” 

button until you hear a long beep.

4. Power off

Press and hold the “ON/MEM” button to turn off the unit. Device will automatically shut down after 1 minute pending 

                        to extend battery life.

NOTES:

• Holding the thermometer too long may cause a higher ambient temperature reading of the probe. This could make the body 

temperature measurement lower than usual.

• Before the measurement, please stay in a stable environment for 5mins and avoid exercising or bathing for 30mins.

• It is recommended that you measure 3 times with the same ear. If the 3 measurements are different, select the highest temperature.

• To avoid the risk of cross contamination, please clean the probe according to “Cleaning and Storage” section after each use.

• Clinical repeatability: 0.18°C (< 1 year old), 0.17°C (1~5years old), 0.15°C (>5years old)

TAKING A MEASUREMENT

FEVER ALARM

SWITCHING BETWEEN FAHRENHEIT(°F) / CENTIGRADE(°C)

The reading of the thermometer is within the normal temperature range of 34°C to 42.2°C (93.2°F to 108.0°F). 

After each measurement, the reading is saved into memory. 

Press the “ON/MEM” button again to see the temperature stored. 

The thermometer provides 9 sets memory for the measurements.

Device stabilization in process.

Temperature taken is higher than 42.2°C 

(108.0°F).

Device can not be powered on to the ready 

stage.

Temperature taken is lower than 34.0°C 

(93.2°F).

Error 5~9, the system is not functioning 

properly.

The ambient temperature is not within the

range between 10°C and 40°C (50°F ~104°F).

The device showing a rapid ambient 

temperature change.

Measurement before device stabilization.

Battery is low and no more measurements are 

possible.

Check the integrity of the probe cover and take 

a new temperature measurement.

Change with a new battery.

Make sure the probe cover is clean and take a 

new temperature measurement.

Unload the battery, wait for 1 minute and 

repower it. If the message reappears, contact

the retailer for service.

Allow the thermometer to rest in a room for at least 

30 minutes at room temperature:

10°C  and 40°C  (50°F - 104°F).

Allow the thermometer to rest in a room for at least 

30 minutes at room temperature:

10°C  and 40°C  (50°F - 104°F).

Replace the battery.

USING THE MEMORY FUNCTION

The probe is the most delicate part of the thermometer. Use with care when cleaning the lens to avoid damage.

Keep the unit dry and away from any liquids and direct sunlight.

The Probe should not submerge into any liquids.

NOTE: Please check the device if damaged once it drops. If unsure, please send the unit to Omron local representative.

CARE AND MAINTENANCE

TROUBLESHOOTING

This device is supplied with one lithium cell (CR2032 x 1).

NOTE: To protect the environment, discard the used batteries in accordance with the local regulations 

regarding waste disposal procedure. Disposal can be done at your retail store or at appropriate 

collection sites.

1. Open the battery cover: Insert a pointed object into the battery cover pick hole. At the same time, 

use thumb to remove battery cover.

2. Flip the battery out with a small screw driver.

3. Insert the new battery under the metal hook on the left side and press the right side of the battery 

down until you hear a “click.”

NOTE: The positive (+) side UP and negative (-) side DOWN.

 

4. Replace the battery cover.

REPLACING THE BATTERY

SPECIFICATIONS

Wait until         stops flashing.

Wait until         stops flashing.

NOTES:

• The specifications may be changed without prior notice.

• Comply with ASTM E1965-98, EN12470-5:2003 Clinical thermometers-Part 5:Performance of infra-red ear 

thermometers(with maximum device),IEC/EN60601-1-2(EMC),IEC/EN60601-1(Safety) standards.

• This thermometer converts the ear temperature to display its “oral equivalent.” (according to the result of the clinical 

evaluation)

Manufacture Date: as the serial number (please open the battery cover, it is shown on the inside of the device.)

Ex.SN:E209A000001, the first “E” is External, the second number “2” is the manufacture year 2012, the third and the

fourth number “09” is the manufacture month, the others is the serial number.

Please read the instructions for use.

Product Type:

Model:

Power Supply:

Power Consumption:

Battery Life:

Sensing Unit:

Temperature Display:

Measurement Accuracy:

Measurement Range:

Operating Environment 

Temp and Humidity:

Storage Environment

Temp and Humidity:

Transportation

Temp and Humidity:

Applied Part:

Weight:

External Dimensions:

Package Content:

Options:

Ear Thermometer

TH839S

3.0V DC, 1 CR2032 Lithium Button Battery

0.01 W

With a new battery approx. 2500 measurement

Thermopile

4-digit, °F display in 0.1 degree increments

3-digit, °C display in 0.1 degree increments

± 0.2°C  (0.4°F) within 35.5°C-42.0°C (95.9°F to 107.6°F), ± 0.3°C  (0.5°F) for other range

34.0°C (93.2°F ) to 42.2°C (108.0°F )

10°C (50°F) to 40°C (104°F), RH

85%

-20°C (-4°F) to 50°C (122°F), RH

85%

less than 70°C (158°F), RH

95%

             = type BF

Approx. 69g (with battery installed)

39 mm (w) × 151 mm (h) × 54 mm (d)

Test Battery (Lithium Button Battery CR2032), probe cap, 21 probe covers, connection ring, instruction manual.

Probe cover exclusively for TH839S, MC-EP2.

OMRON HEALTHCARE SINGAPORE PTE LTD.

Medical Technology Promedt Consulting GmbH

Altenhofstrasse 80, D-66386 St. Ingbert, Germany

438A Alexandra Road, #05-05/08, Alexandra Technopark 

Singapore 119967

www.omron-healthcare.com.sg

Asia Pacific HQ

Radiant Innovation Inc.

1F, No.3, Industrial East 9th Road, Science-Based 

Industrial Park, HsinChu, Taiwan 300.

       WARNING

• Do not forcibly insert the probe in the ear.

• If you feel discomfort such as a pain during the measurement, stop using the unit immediately. It may injure the external auditory 

canal.

• Do not use this unit if suffering from ear disease such as otitis externa or otitis media. It may worsen the condition.

• Do not use this unit when the external auditory canal is wet such as after swimming or taking a bath. It may injure the external 

auditory canal.

• Conducting self-diagnosis based on the measurement results and/or treatment can be dangerous. Please follow the instructions of 

your doctor. Self-diagnosis may worsen the symptoms.

• Do not use this unit without attaching a probe cover.

• If the probe cover becomes dirty with earwax or other substances, replace it with a new one.

• Correct measurement result may not be obtained if dirty probe covers are used.

• Proper installation of the probe cover ensures accurate measurements.

• If device is accidentally used without a probe cover, clean the probe as follows:

(a)Please use the cotton swab with the Alcohol (70% concentration) to clean the lens (on the inside of the probe).

(b)Allow the probe to fully dry for at least 1 minute.

• Only use one probe cover at a time.

• If there is any temperature difference between the places where the unit is stored and where you are going to measure, leave the 

unit in the room where you are going to use it for more than thirty minutes to allow it to reach room temperature first, then 

measure.

• If the ear is cold, wait until the ear is warmed up before taking a temperature measurement. The measured result may indicate low 

when you use an ice bag or an ice pack or immediately after coming in from the outside in winter.  

• Do not touch the infrared sensor with a finger or breathe on it.

• The probe is the most delicate part of the thermometer. Use with care when cleaning the lens to avoid damage.

• Do not attempt measurements when the thermometer is wet as inaccurate readings may result.

• Store the unit out of children's reach.

• In an emergency case, if a child swallows a battery or a probe cover, immediately consult with a doctor.

• Do not use a probe cover after someone else has used it. This can lead to cross infections such as otitis externa. 

• Do not throw batteries into a fire. The battery may explode.

• Children may try to measure by themselves and may damage the ear.

GENERAL SAFETY PRECAUTIONS

• Do not apply a strong shock to, drop, step on, or vibrate the main unit. 

• Do not use this unit other than for measuring the temperature in the human ear.

• Do not use a portable phone near the unit.

• The main unit is not waterproof. Be careful when handling this unit so that no liquid (alcohol, water, or hot water ) will get into 

the main unit. 

• Do not disassemble, repair, or modify the unit.

• When you inform your doctor of your temperature, make sure you state that you measured the temperature in the ear. 

Place Adhesive Side Upward

 

n

o

it

u

l

o

S

 

m

e

l

b

o

r

P

 

e

g

a

s

s

e

M

 r

o

r

r

E

Reviews: