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Display of measuring results 

The value displayed will be between 32-42.9C (89.6-109.3F). 
 
The letters “HI” are displayed if a result exceeds 42.9C (109.3F). 
The lett

ers “LO” are displayed if a result falls below 32C (89.6F). 

 
At completion of measurement, the unit automatically returns to the normal 
time mode after 30 seconds. The display will be turned off one minute after 
the last button is pressed (when in sleep mode). 
 

Memory mode 

A reading will automatically enter the memory once it has been taken. A 
maximum of 30 records will be stored in the memory. 
 
Press the 

MEM

 button to enter the memory mode and retrieve the recorded 

temperatures. The thermometer will beep three times. If empty, the display 
will show two quotation marks on the display.  
Press the 

TALK

 button and the thermometer will announce 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 
the battery cover on the back of the thermometer where there are two 
horizontal raised ridges. Slide the compartment away from the unit and 
completely remove. Slide the first battery into the left of the compartment 
with the negative (flat) side going into the unit. The battery on the right 
should be the same way, with the negative (flat) end being put into the 
compartment with the positive end sitting towards the bottom of the unit. 
When complete, replace battery cover until it clicks into place. 
 
Replacement AAA batteries are available from RNIB. 
 

Please note:

 RNIB does not guarantee batteries. 

 

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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