non-encryption pinpad KMY3502B Faceplate Dimensions（W×H）：87.5×91.5mm Physical Features Keypad made of high quality stainless steel Customizable layout, dimension and installation design Dustproof, waterproof, shake-proof, pickproof, drill-proof, bombproof Braille key design for visually handicapped people Ports for optional eight external function keys, beeper and guide light IP Protection Class IEC/DIN/EN/ 60529:IP65 IK Protection Class DIN EN 50102:IK07 USB and PS/2 interface optional GW:0.55KG Reliability and Performance Data Key lifetime > 2,000,000 cycles per key Force on keys: 3~5 N Key travel: 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 1.5W. Running lifetime > 5 years; Battery lifetime > 5 years (without external power supply) Environment Requirements Only the front panels shall be exposed to outdoor climate. The panels are dustproof, waterproof, shake- proof, pickproof, drill-proof and bombproof. Operating temperature range: –25℃-45℃ Storage temperature range: –25℃-65℃ Maximum humidity in operating environment: 80% Approvals: CE, RoHS, FCC