Widely used in the following fields:    
-Self-Service Terminals
-Info- Kiosk
-Medical devices(ultrasonics,etc)

Electric characteristics:
Communication interface: PS2 or USB
Connector: 6-pin DIN or USB
Supply Voltage: 5V DC+5%
Current: 10mA
Mechanical specifications:
Ball material: stainless steel
Ball diameter: 38mm
Actuation force: 65g/1.5mm
Key lifespan: > 2,000,000 times
Weight: 0.2 kg
Panel Size: 71*57mm
Environment adaptability:
Keyboard is watertight when mounted correctly to ATM
Protection level: IP 65 (static) / IP 54 (dynamic)
Temperature range: -25 to + 55 degrees Celsius
Humidity range: 20 to 95%
Air pressure: 60 to 106kPa
Reliability:
MTBF: > 20,000 H
MTTR: < 30 minutes