Weather proof industrial 16 key custom metallic keypad with optical trackball optional​

- 16 key vandal proof water proof metallic keypad with 38.mm trackball optional with high-quality 304# stainless steel

- Support Braille (part) or graphic cap (optional)

- Voltage: passive PIN interface or +5 DC volts +/-5%

- Standby current: about 20 mA

- Contact material: Graphite / gold contacts

- Interface: PS2, RS232, USB optional.

- Key size: a common key size 14 mm x 14 mm

- Key trval: 0.45 mm

- The trigger pressure: 2 bovine cattle +/-0.1

- Gross weight: 1.0KG

- Compatible operating system:

-  PS2/RS232: Win NT4, 98SE, 98ME, 2000, XP, VISTA, WINDOWS 7;

-  USB: Win 98SE, 98ME, 2000, XP, VISTA, WINDOWS 7 and Mac OS9 / OSX.

- Buttons life: more than 1000000 times the trigger

- Operating life: > 3 years

- Mean time to repair (MTTR): less than 30 minutes

- Operating temperature: -10 degrees centigrade ~ +60 degrees Celsius

- Storage temperature: -20 degrees centigrade ~ +70 degrees Celsius

- Operating relative humidity: 5~90% (condensation)

- Atmospheric pressure: 60-106Kpa