Interface: RS232 or USB Features 3DES Encrypted PIN Pad made of high quality stainless steel Customizable layout, dimension and installation design 16 keys: 10 numeric keys and 6 function keys Dustproof, waterproof, shake-proof, pickproof, drill-proof, bombproof Braille key design for visually handicapped people Ports for optional 8 external function keys, beeper and guide light Tamper Detection and Protection IP Protection Class IEC/DIN/EN/ 60529: IP65 (front panel) IK Protection Class DIN EN 50102: IK07 Supported Algorithms DES user data ECB/CBC encryption/decryption 3DES user data ECB/CBC encryption/decryption DES MAC calculation 3DES MAC calculation DES PIN encryption 3DES PIN encryption Multiple PIN Block formats: ANSI, ISO0, ISO1, ECI2, ISO3, IBM3624, DIEBOLD, DIEBOLDCO Reliability and Performance Data Key lifetime > 2, 000, 000 cycles per key MTBF >15, 000 hours Force on keys: 2.5 3.5 N Key range: >0.45mm Wide voltage input: 5V DC +/- 20% In running state, 5 V +/- 20% is needed; The electrical current is up to 100 mA and the actual power consumption is below 1W. Running lifetime > 5 years; Battery lifetime > 5 years (without external power supply) Calculation time on 256 bytes by 3DES MAC calculation < 500 milliseconds Environment Requirements Operating temperature range: 0~ 60 Celsius Storage temperature range: -25 ~ 80 Celsius Relative humidity: 30%~90% Atmospheric pressure: 60~106 KPa For security reasons, the user PIN is deleted when the environment temperature is beyond the storage temperature range. The target level for this function is set to -30 Celsius. Approvals: Pass the certification of China Central Bank card testing center; CE, RoHS, FCC Bubble Wrap + Standard White Box