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Thank you for purchasing this Advanced Solutions™ thermometer. We’re proud to be 

your choice to help you keep your child healthy and safe. Please be sure to read all 

warnings, instructions and notations before using this product.

User’s Guide TH053

Easy Read 4-in-1 Thermometer

Easy Read 4-in-1 Thermometer

Basics of Your Thermometer

Normal Body Temperature

Memory Recall

Select Mode

Trouble Shooting

Temperature

Unit of Measure (˚F/˚C)

Low Battery

Modes 

ORAL

RECTAL

UNDERARM BATH WATER

Memory

Fever Light

TM

(Screen Flashes)

Probe Tip Cap
Probe Tip

Insertion Gauge

Illuminated Display 

with Fever Light

TM

ON/OFF Button 

Thermometer stores the last temperature reading with the 
site from which it was measured.  As a reference for parents, 
that temperature reading displays automatically when the 
thermometer is powered on. 

•  While the thermometer is off, press and hold the ON/OFF   

button for 3 seconds. 

•  Press the button again to cycle through the four mode 

options (Figure C). 

•  When the desired mode displays on screen, wait for auto 

shut-off to select it.

METHOD

Oral

Rectal

Underarm

NORMAL 

TEMPERATURE

97.0° - 99.6°F

97.3° - 100.4°F

95.4° - 98.6°F

FEVER

RANGE

99.6°F +

100.4°F +

98.6°F +

Display    Recommended Action

Display     Recommended Action

  

Probe may not have been positioned correctly. Proper probe placement is essential for an accurate reading. Review probe 

placement instructions and try again. 

  

If thermometer has been stored in a cold environment, wait 15 minutes to allow thermometer to reach room temperature, then try again.

  

If you are measuring bath water temp, confirm that thermometer is in bath temperature mode (bth).  A reading below 89.6°F 

will cause the 

L display. 

  

If thermometer has been mishandled, you may have irreversibly damaged product. Confirm other possible solutions (above) 

before discarding.

  

Turn thermometer off, wait one minute, then re-take temp.

  

If thermometer has been stored in a hot environment, wait 15 minutes to allow thermometer to reach room temperature, then try again.

  

If you are measuring bath water temp, confirm that thermometer is in bath temperature mode (bth).  A reading above 111.1°F  

will cause the 

H display. 

  

If thermometer has been mishandled, you may have irreversibly damaged Product. Confirm other possible solutions (above) 

before discarding.

  

Battery icon displays when battery is getting low.  A few more readings may be possible, but it is time to 

purchase a new battery. 

  

Battery icon flashes when battery is completely exhausted and needs to be replaced.

  

Measured body temperature is in fever range or bath water temperature is too hot. (See Fever Light

TM

 

section for details).

  

Do not return this product to the place of purchase. If any parts are missing, email [email protected]

call Consumer Relations at (800)544-1108, or fax at (800)207-8182. You can also visit our website at 

www.safety1st.com. Have ready the model number (TH053) and date code (manufacture date located on 

package).

  

Install new batteries and re-try function before calling Consumer Relations on electronics.

  

If thermometer has been mishandled, you may have irreversibly damaged it.  

Shut off and restart before discarding.

Care and Maintenance

One (1) Year Limited Warranty

Technical Specifications

How to Replace the Battery

Cleaning Probe Tip:
 •   Clean before and after each use.
 •   Use an alcohol swab to wipe clean.
Cleaning Thermometer Body:
 •   Use a soft, dry cloth to clean thermometer body.
Notes:
•   DO store thermometer in a dry place at room temperature 

with the protective cap in place.

•   DO take special care not to scratch the display window.
•   DO NOT use abrasive cleaning agents, thinners or benzene 

for cleaning.

•   DO NOT expose thermometer to extreme temperatures,  

humidity or direct sunlight.

•   DO NOT  drop thermometer.

Dorel Juvenile Group, Inc. warrants to the original purchaser that 

this product (Thermometer), is free from material and workmanship 

defects when used under normal conditions for a period of one (1) 

year from the date of purchase. Should the product contain defects 

in material or workmanship Dorel Juvenile Group, Inc., will repair or 

replace the product, at our option, free of charge. Purchaser will be 

responsible for all costs associated with packaging and shipping the 

product to Dorel Juvenile Group Consumer Relations Department at 

the address noted on the front of this document and all other freight 

or insurance costs associated with the return. Dorel Juvenile Group 

will bear the cost of shipping the repaired or replaced product to 

the purchaser. Product should be returned in its original package 

accompanied by a proof of purchase, either a sales receipt or other 

proof that the product is within the warranty period. This warranty is 

void if the owner repairs or modifies the product or the product has 

been damaged as a result of misuse.   
This warranty excludes any liability other than that expressly 

stated previously, including but not limited to, any incidental or 

inconsequential damages.
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION 

OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE 

LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU 

MAY ALSO HAVE OTHER RIGHTS THAT MAY VARY FROM STATE TO 

STATE.

Measurement Range:    89.6° F to 111.1° F
Measurement Accuracy:
  +/- 0.2° F for temps       98.6° F to 102.2° F                                               
  +/- 0.3° F for temps       96.4° F to <98.6° F or >102.2° F to 105.8° F      
  +/- 0.5° F for temps       <96.4° F or >105.8° F 
Operation Environment:  60.8° F to 104° F  
Storage Environment: 

-4° F to 120° F                                       

Test Protocol:  Unit must be tested using water bath. 

•   When the “   ” icon 

appears while the unit is 

ON, (Figure D), the battery 

is nearly exhausted, but a 

few measurements may 

still be taken. 

•   When the “   ” icon 

flashes, (Figure E), the 

battery is exhausted and 

need to be replaced.

To Replace Battery:

1    Use a coin to loosen battery 

cover. Remove cover (Figure F).

2   Pry battery from compartment and discard properly.
3   Insert a new 3-volt battery (CR2032 or equivalent), correctly 

positioned with the positive “+” side facing up as shown in 

illustration (Figure G).

4   Place the battery cover on the thermometer and secure the cover.

©2012 Cosco Management, Inc.  

All Rights Reserved. Todos derechos reservados. www.djgusa.com   

(800) 544-1108 www.safety1st.com

Made in CHINA. Hecho en CHINA. 

Styles and colors may vary. Los estilos y los colores pueden variar.

Distributed by (distribuido por) Dorel Juvenile Group, Inc.,  

2525 State St., Columbus, IN 47201-7494

Dorel Distribution Canada, 873 Hodge, St. Laurent, QC H4N 2B1

11/07/12     4358-6048A

Coin

Positive

ORAL

— For children 4 years and 

older. 

1.

  Confirm that 

oral mode is 

selected 

 .

2.

  Ensure that 

L 

displays and 

that  °F (or °C) 

is still flashing, then place probe 

tip under the tongue in locations 

indicated by  . Instruct children 

not to bite down on the probe.  

 

UNDERARM

—For child under 

age 4 who will not cooperate with rectal 

temperature measurement.

1.

  Confirm that 

underarm mode is 

selected  

.

2.

 Wipe underarm 

with a dry towel. 

Probe must touch 

skin.

3.

  Ensure that 

L displays and that °F (or 

°C) is still flashing, then place probe 

tip at center of underarm. Bring arm 

down against the body.

RECTAL

— Highly accurate for measuring 

core body temperature. Pediatrician 

recommended mode from birth to age 1, and 

beyond as tolerated by child. 

1.

  Confirm that rectal mode 

is selected  

 

2.

  Lubricate probe tip with 

a water-soluble lubricant 

or petroleum jelly.  For easier insertion, 

position baby so that the back and legs 

form a 90-degree angle (L-shape).

3.

  Ensure that 

L displays and that °F (or °C) is 

still flashing, then insert probe tip no more 

than 1/2 inch (1.3 cm) into rectum.  Do 

not force the tip into rectum if resistance is 

encountered.

BATH WATER

— Ideal bath water 

temp is between 90° F and 100° F. 

1.

  Confirm that bath water mode is 

selected 

 .

 

2.

  Ensure that 

L displays and that °F 

(or °C) is still flashing, then place 

probe tip into bath water, up to 

the insertion gauge. DO NOT allow 

electronics to get wet.

How to Measure Temperature

Specifics for each Temperature Mode

Please read this section carefully and all the way through before using the thermometer. 

Ensure that thermometer is at room temperature, waiting 15 minutes if necessary.  

•   Remove probe tip cap. Press and release ON/OFF   button. All segments display for 1 second (Figure A) as the thermometer powers on.  

•   Thermometer beeps once, and the last temperature measured displays on screen (Figure B) for a few seconds.  

•   The current selected mode flashes and then °F (or °C) flashes. Confirm that the desired temperature mode is selected. (See “Select Mode” to change 

temperature mode.)

A

B

 

Red backlight 

is illuminated

F

D

E

G

WARNING

•  This is NOT an ear thermometer. Take 

temperature measurements Underarm, Orally 

or Rectally.

•  NEVER allow a child to play with this 

thermometer. It is not a toy. This is a sensitive 

electronic device and may be damaged if not 

used properly under parental supervision.

•  ALWAYS supervise your child when using 

thermometer. NEVER allow your child to use 

it alone or without close parental supervision.

  

Avoid sudden impact and dust.

  

Do not expose the thermometer to extreme 

temperatures, humidity, direct sunlight or 

shock.

  

Replace only with CR2032 or equivalent  

lithium battery. Use of other types of batteries 

may present a risk of fire or rupture. 

BATTERY CAUTION 

•  Keep batteries out of child’s reach. Swallowing a 

battery could be fatal. 

•  Used batteries should be disposed of properly. 

•  Battery should not be charged or placed into 

extreme heat as it may explode. 

•  Remove batteries when stored for long periods 

of non-use.

IMPORTANT INFORMATION

•  Read these instructions carefully to ensure accurate 

temperature readings.  Temperature readings are 

affected by many factors including exercise, drinking 

hot or cold beverages prior to taking a reading as well 

as technique.

•  Rectal temperatures vary by approximately 

0.9°F/0.5°C.

•  DO NOT allow child to walk or run during temperature 

taking. Probe could present a hazard.

•  When °F (or °C) stops flashing, the measuring is complete.  Approximate measurement times are:  5 seconds for oral and rectal temps, 8 seconds for underarm temp and 8-15 seconds for 

bath water temp. 

 

 

 

•  Remove probe tip from body location or bath water and check temperature.   

 

 

•  Thermometer beeps and the display glows with red backlight to indicate that fever has been detected or that bath water is too hot.  (See Fever Light™ section for details.)

•   Thermometer will shut off automatically after one minute, or press button to shut off. 

 

 

 

 

 

 

 Fahrenheit / Celsius 

•  Power on the thermometer.  
•  During the first 5 seconds, press and hold the ON/OFF button 

until °F or °C flashes.  

•  Quickly press ON/OFF button to switch between °F and °C 

modes.  

•  When the desired unit of measure (°F or °C) displays on screen, 

wait for auto shut-off to select it.

Temperature readings are different from person to person and also vary 

depending upon the body location from which the temperature is measured. 

For example:  Oral temperatures tend to be comparable to ear temperatures and 

approximately 1° lower than rectal temperatures for the same individual.  Temperature 

readings can also be affected by other factors, including exercise, consuming 

hot or cold food/beverages prior to taking a reading, and technique.
“Normal” temperature refers to each individual’s average temperature while 

healthy.  You may want to measure and record your child’s temperature a few 

times when he or she is well, so that you will know what is normal for your 

own child.  On average, temperature ranges are as follows:

Fever Light

TM

The backlight illuminates red and thermometer beeps when:

  •  body temperature is in the fever range

    (varies by measurement site, see chart above)

  •  bath water temperature is too hot (exceeding 100.0˚F)

High or prolonged fever requires medical attention, especially for 

young children. Contact your physician. A fever chart is included on 

the product. 

Temperature

Unit of Measure (˚F/˚C)

Low Battery

Modes 

ORAL

RECTAL

UNDERARM

BATH WATER

Memory

Fever Light

TM

(Screen Flashes)

C

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