Matrix numeric keypad 4x4 keypad ATM bank keypad for access control system

Technical Specification Input Voltage 3.3V/5V Waterproof Grade IP65 Vandal roof Grade IK09 Working Life More than 1 million time per key Key Elasticity 250g/2.45N Key Travel Distance 0.45mm Working Temperature -25℃~+65℃ Storgage Temperature -40℃~+85℃ Relative Humidity 30%-95% Atmospheric Pressure 60Kpa-106Kpa Features 1.Key frame using special PC / ABS plastic 2.Buttons made of high quality zinc alloy, with a strong anti-destruction capability 3.Conductive silicone rubber produced using natural rubber, wear resistance, corrosion resistance, anti-aging 4.board using double-sided PCB (customizable), contacts Gold-finger use of gold process, the contact is more reliable Users select 1.Button color: bright chrome or matte chrome plating. 2.Key frame color according to customer requirements. 3. With alternative interface.