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Thank you for purchasing the Rexall

 Digital Flex Tip Thermometer.  To correctly utilize all the advantages of this product, 

please familiarize yourself with these operating instructions before using the thermometer for the first time.  Keep the 

instructions in a safe place for future reference.

SAFETY INFORMATION:

• High, prolonged fever requires medical attention, especially for young children.  Please contact your physician should this 

occur.

• This thermometer contains small pieces that can pose a choking hazard. Do not allow children to take their own 

temperatures unattended.

• Keep battery away from children, harmful if swallowed.

• Do not open the thermometer except to replace the battery.

• To avoid damage to the probe, do not bend beyond a 45° angle.

• Use of a probe cover may result in a 0.1°C (0.2°F) discrepancy from actual temperature.

• Do not boil probe to disinfect.

• Do not store in direct sunlight or in areas of extreme heat.

HOW TO TAKE A TEMPERATURE:

1. Select Oral, Axillary (Underarm) or Rectal as your measurement site based on each individual. Clean thermometer with 

soap and water prior to use.

2. Push the operating button located beside the display window.  The thermometer will beep and the display will read: 

M

.  

This is a function check indicating that the unit is working properly.  Should there be a reading in the memory it will then 

appear.  Immediately after 37.0°C /98.6°F will appear then, 

  with the °C/°F flashing and the “M” gone, will indicate 

that the thermometer is ready for use.

IMPORTANT:            does not refer to the battery level.

3. While taking a temperature, the °C/°F symbol flashes as long as the temperature increases.

4. A beep will sound for 10 seconds indicating that the peak temperature has been reached. If the temperature is 

37.8°C/100°F or higher rapid beeps will sound indicating a fever.

NOTE:

 The LCD will display “

” if the measurement taken is below 32.0°C/90°F. It will display “HI°C” if  the measurement 

is above 42.9°C/109.9°F.
5. To prolong the life of the battery, turn the thermometer off after each use by pressing the operating button briefly, 

otherwise the unit will turn off automatically in approximately 10 minutes.

6. To switch the thermometer from °C to °F, press and hold the operating button for 2 seconds when the thermometer is off. 

The thermometer will turn on and either °C or °F will be displayed.

ORAL USE:

• Do not drink hot or cold fluids, exercise, smoke or perform other activities prior to a measurement. These actions will raise 

or lower temperature readings when compared to your normal, average temperature.  The mouth should remain closed for 

up to 5 minutes before attempting a reading.

• Place the probe tip well under the tongue and wait until a beep is heard.  Instruct children not to bite down on the probe.

AXILLARY (UNDERARM) USE:

• Wipe underarm with a dry towel.

• Place the probe tip in the hollow of the armpit and bring arm down against the body and wait until a beep is heard.

RECTAL USE:

• Commonly used for babies, young children or when it is difficult to take an oral or axillary (underarm) temperature.

• Lubricate the thermometer with a water-soluble personal lubricant or petroleum jelly.

• Gently insert the probe tip no more than 

½

 inch or 1.3 cm into the rectum, and wait until a beep is heard. 

Do not force the tip into the rectum if resistance is encountered.

WHAT IS “NORMAL” BODY TEMPERATURE?

“Normal” body temperature varies from person to person and changes according to time of day and body location. The 

following table shows the temperature ranges:

Fever Temperature

Temperature Ranges

Rectal*

Over 38°C  / 100.4°F

 

36.6°C – 38°C  / 97.8°F – 100.4°F

Oral (mouth)*

Over 37.5°C  / 99.5°F

 

35.5°C – 37.5°C  / 95.9°F – 99.5°F 

Axillary (underarm)*

Over 37.2°C  / 99°F

 

36.5°C – 37.2°C  / 97.7°F – 99°F

*Fever definitions according to the Canadian Paediatric Society

IMPORTANT:

 It is recommended to measure the body temperature when healthy to establish the specific “normal” 

temperature.

MEMORY RECALL:

This thermometer has a memory which recalls the last temperature taken.  To obtain this information, with the thermometer 

off, press the operating button.  The screen displays 

M

 then the last measurement which will be deleted after the next 

temperature is taken.  

             

CLEANING AND DISINFECTING:

Before and after each use, clean the thermometer with warm soapy water and a soft cloth.  Disinfect using a cotton ball 

moistened with alcohol.  Never immerse in hot water or in harsh cleaning solutions.

INSTRUCTIONS

DIGITAL FLEX TIP THERMOMETER

RX546

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