... keyboard with trackball 2,Water/dust proof 3,103 keys,including 12 Function keys and number keypad Key Features: 1) Waterproof industrial keyboard with ... plus anti-lever-out design for the keys,this feature makes it ideal for unattended application,for example,kiosks deployed in public ... resistance: 3 axis 150 m/s² - 11 ms, IEC 60512-4 Operation system - PS2: Win NT4, 98SE, 98ME, 2000, XP - ...