20 keys Stainless steel numeric keypad

 20 keypads made of high quality Stainless steel.

Automatic detection of disassembling the keypad

- Support algorithms of DES and Triple DES

- Key top style: Plain/non-protuberant rectangular keys, with laser engraved and

etched and raised  braille on keys are available

- Waterproof, dustproof, shake-proof, pickproof, drill-proof, bombproof.

- Customized design;

- Key travel: 0.45mm

- Force on Keys: 2.5N

- Life time:>2,000,000

- Protection level: IP 65 (static) / IP 54 (dynamic)
- Temperature range: -30^oC ~ +80^oC
- Humidity range: 30% - 98%
- Air pressure: 60 - 106kPa

- Size: 120*90mm

- Weight: 0.35kg

- PS/2 or USB, RS232  Interface options ;
- O/S: Ps2/rs232: Win nt4,98se,98me,2000, XP

                  USB: Win 98se,98me,2000, XP and mac os9/osx.