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Using the product 

The measurements taken on this device are for your information only and 
are not a substitute for a medical examination. 
 
Before taking a measurement, it is recommended that the thermometer is 
stored at room temperature for at least 30 minutes. Failing to do so may 
cause inaccuracy. Please make sure all measurements are taken indoors. 
 
We recommend taking any measurements while rested; taking 
measurements immediately after exercise could result in inaccurate results. 
 

Enabling/disabling the talking function 

To enable the talking function, ensure that the thermometer is switched on 
and then press and hold the 

TALK

 button until you hear two beeps. The 

sound icon will appear on the display. Press the 

TALK

 button again once to 

confirm that the talking function is enabled. 
 
To disable the talking function, ensure that the thermometer is switched on 
and then press and hold the 

TALK

 button until you hear one beep. The 

sound icon on the display will disappear. During measurement, with the 
talking function disabled, the thermometer will beep to indicate that the 
measurement has been taken and will then show the result on the display. 
 

To measure the temperature in the ear 

Important notes: 

  It is recommended to clean the ear before taking a measurement. 

  A measurement taken in the right ear may differ from a measurement 

taken in the left ear. It is advised to always take the temperature in the 
same ear. 

  If you are wearing a hearing aid or ear plugs, remove them and wait 30 

minutes prior to measuring the temperature in the ear. 

  If you are currently using ear drops or other ear medications that have 

been placed in the ear canal, take the measurement in the other 
untreated ear. 

 
The first time you use the thermometer it is recommended to check the 
temperature in the same ear three times. When repeating a measurement 
wait about 30 seconds between measurements. 

Summary of Contents for DH440

Page 1: ...s and conditions of sale and How to contact RNIB sections of this instruction manual Please retain these instructions for future reference These instructions are also available in other formats Contents General description 2 Orientation 2 Front 2 Right edge 2 Back 2 Product features 3 Getting started 3 Batteries 3 Display 4 Change between Celsius Fahrenheit 4 Setting the clock 4 Setting the Sleep ...

Page 2: ...sition the thermometer so the measuring probe is facing towards you and is at the top On the front of the unit you will find from top to bottom the measuring probe the LCD display and one white oval shaped button below the display This is the MEM button used to access the memory and to set functions Please note When you receive the unit the forehead probe will be in place ready for use This can be...

Page 3: ... 6 109 3F Measurement records this device can store a maximum 30 entries Each entry has a maximum storage time of 30 days Temperature is stored together with date time and measurement mode ear or forehead Room temperature measurement ranges from 5 59 9C 41 139 8F Voice prompts available for measurements room temperature and time The measurement results will be announced in degrees Celsius C or deg...

Page 4: ...ou hear one beep to enter the setup mode The hour digits will then start to flash Press the MEM button to change the hours and press the TALK button to confirm The unit will beep and then the minute digits will flash Repeat the above process and then the setup mode moves through to year month date sleep mode on off Remember to press the MEM button to change the time or date and toggle between slee...

Page 5: ...e thermometer is switched on and then press and hold the TALK button until you hear one beep The sound icon on the display will disappear During measurement with the talking function disabled the thermometer will beep to indicate that the measurement has been taken and will then show the result on the display To measure the temperature in the ear Important notes It is recommended to clean the ear ...

Page 6: ...n the eyebrow and hairline The forehead adaptor needs to be in contact with your skin Press the oval shaped measurement button on the back of the device once to start the measurement and you will hear one beep When the measurement is completed you will hear two beeps and then the result will be announced via the speaker and it will be shown on the display The result will be stored into the memory ...

Page 7: ... the reading When in this mode press the MEM button once and it will cycle through to the previous record Simply press the TALK button again and it will announce that reading too Please note the unit will return to show the original display information automatically after five seconds if no button is pressed Battery replacement The thermometer uses two AAA batteries To replace the batteries locate...

Page 8: ...r is not used for any length of time we recommend removing the batteries Calibration This thermometer is calibrated at the time of manufacture If the unit is used according to the instructions periodic recalibration is not required If at any time you question the accuracy of the measurement please contact RNIB Don t attempt to modify or reassemble the thermometer as this will invalidate the produc...

Page 9: ...or immediately Please dispose of batteries in accordance with your local council s directive on waste and re cycling Do not throw batteries into fire Electromagnetic compatibility EMC This device should not be used adjacent to or stacked with other equipment Use of accessories other than those specified in this manual and provided by the manufacturer of this device could result in increased electr...

Page 10: ...t 131g Working environment Temperature 15C 40C 59F 104F Relative humidity 30 RH 80 RH Storage environment Temperature 20C 55C 4F 131F Relative humidity 15 RH 90 RH How to contact RNIB Phone 0303 123 9999 Email shop rnib org uk Address RNIB Midgate House Midgate Peterborough PE1 1TN Online Shop shop rnib org uk Email for international customers exports rnib org uk Terms and conditions of sale This ...

Page 11: ...r local recycling centre Search for your nearest recycling centre by visiting www recyclenow com Why recycle Unwanted electrical equipment is the UK s fastest growing type of waste Many electrical items can be repaired or recycled saving natural resources and the environment If you do not recycle electrical equipment will end up in landfill where hazardous substances will leak out and cause soil a...

Page 12: ...g retailers must provide a system which allows all customers buying new electrical equipment the opportunity to recycle their old items free of charge As a responsible retailer we have met the requirements placed on us by financially supporting the national network of WEEE recycling centres established by local authorities This is achieved through membership of the national Distributor Take back s...

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