Structure
The KMY EPP is mainly constructing with the components as bellow:
1. 16 pieces of stainless steel keycaps
2. Stainless steel frame
3. Tamper resistant secure box
4. Main board, all electronic components are layout on the board
5. Has strong WOSA driver supported, so it can be applied to different ATMs / Kiosks.

Appearance
1. Keypad made of high quality stainless steel
2. Customizable layout, dimension and installation design
3. Braille key design for visually handicapped people

Keycap press force
1. All keycaps press should have event,
2. All keycaps press force is the same, the force is 3.6 N.
3. All keycaps press should has a feedback feel.
4. All keycaps press’s life time is longer than 2,000,000

Mechanism
1. Keystroke life time > 2,000,000
2. Keystroke force 3.6 N
3. Keystroke travel 0.45mm

Environment Requirements
1. Operating temperature range: –25℃-65℃
2. Storage temperature range: –25℃-65℃
3. Maximum humidity in operating environment: 80%
4. For security reasons, the secure information will be deleted when the environment temperature is beyond the storage temperature range.

Life time
1. The life time of KMY EPP is longer than 10 years.
2. The battery ‘s life time is longer than 10 years(without external power supply).

Communication Interface
RS232 or USB interface (including the data transmit line and power supply line)
RS232: RJ45 according to RS232-D up to 19200 baud
USB: Connector emulates RS232 port, free driver available.