industrial metal keyboard

Key Specifications/Special Features: Made of high-pure stainless steel materials Standard QWERTY layout (customized available) Provide USB or PS2 interface ( Plug and Play) Mechanical features: Total keys: 64 Size: 295 x 105mm Weight: 1.2 to 1.5 kg Key life span: > 3,000,000 times Key pressure: 2 to 3N Key travel: long travel (1.5mm) Key and panel material: high stainless steel Protection level: IP65 static/IP54 dynamic Key graphics: laser engraved lettering and strong painting Operating environment: Operation temperature: 0 to +40 deg.C Relative operation humidity: 30 to 90% RH Storage temperature: -25 to +55 deg.C Air pressure: 60 to 106k Pa Windows 98/2000/ME/XP, Linux