Metal Computer Keyboard

we are offering metal computer keyboard. we are offering metal pc keyboard.
introduction: keypad was made of high quality stainless steel. it has the functions of dustproof, waterproof, shakeproof, pickproof, drillproof and bombproof. and we havece, fcc and rohs certificated.
standards: isoiec9995, gbt1408
properties of products: key lifespan: above 2, 000, 000, 000 key press force: 3~5n key travel: less than 2.5mm
size:330*100(mm)
interface: ps2 or usb port
applications: atm, cdm, self-service terminal, payment center
environment adaptation:
operation temperature: economical grade: 0~45 rh: 30%~90% industrial grade: -40~+60 rh30%~90%
storage temperature(recommended): -25~+55 rh: 20%~95%(no condensate). air pressure: 60~106kpa.