Computers for visually impaired persons!
The commercial desk calculator without speech output, with extra-large display and keys combines basic functions, commercial functions and conversion functions in one device.
Functions
- Extra large 10-digit display
- Extra large buttons (1.5 x 1.5 cm)
- 10 memory locations
- Reciprocal value
- Percentage calculation
- Squaring, exponentiating and drawing a root
- Calculate compound interest, present value and annuities
- Conversion of currency, temperature, volumes, length and weight
- Date and time with alarm function
- Key lock
Technical data
- Power supply 4 x 1.5V AA batteries or mains adapter
- Power supply connection 3.4/1.35 mm hollow plug socket
- Operating temperature 0 - 40° Celsius
- Dimensions (l/w/h) 210 x 170 x 45 mm
- Weight 487 g (including batteries)
- Colour royal blue
Scope of delivery
- Doublecheck XL
- 4 x 1.5V AA batteries
- Operating instructions in black letters and on CD
Operating instructions for Double Check XL in German