Caretec DoubleCheck, User Manual

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4.9:  Time and Date 

DoubleCheck XL offers a built-in clock. The time is announced when the 
TIME/DATE key (3 x 3 group, row 1, left key) is pressed. To hear the date, press the 
TIME/DATE key long. The Time and Date are also announced in standby mode, 
without having to press the ON-key prior to that. 
 

4.10:  Memory Function 
4.10.1:  Save Values  

Values can be saved in the memory by a long press of the RCL/STO-key (3 x 3 
group, first row, middle key) and a press of a number from 1 to 9. The value is then 
saved in the chosen slot. (a letter M is shown on the display). 
 

4.10.2:  Select Stored Values 

A short press of the RCL/STO-key and a press of a number from 1 to 9 will  
recall the memory, which was saved in this slot. 
 

4.10.3:  Delete Stored Values 

In order to delete a stored value, you save the value „0“ on this slot. (The letter M 
will disappear from the display). 
 

 
4.11:  Repeat Function 

By pressing the Repeat-key (Auxiliary key,row 4) or by pressing the Menu-key short 
(3 x 3 group. row 2, column 2) the entire entry will be repeated, even before the 
operation is finished. 
 

4.12:  Backlit Display (option) 

The light on the backlit version can be turned on or off by pressing the Light-key 
(Auxiliary key in row 1).  
 

5:  Arithmetic Procedures 

DoubleCheck XL offers all standard arithmetic functions, as well as the possibility to 
calculate percentages, extract square roots or square a given number. 
 

5.1:  Standard Arithmetic Functions 

The standard arithmetic functions include: to add, to subtract, to multiply and to 
divide. To accomplish one of those standard functions, just type in the number 
followed by the function (4 x 4 group, the right column, row 1 to 4) and the second 
number. To finish the arithmetic procedure, press the Equals-key (4 x 4 group, row 
4, column 3).  The Equals-key has a short tactile line. 
  

Note:

 The memory will be reset when power is removed.