USB interface digital metal keypad with 16 keys

Main Features: Keypad made of high quality stainless steel,Customizable layout, dimension and installation design 16 keys: 10 numeric keys and 6 function keys Dustproof, waterproof, against corrosion,shake-proof, pickproof, drill-proof, bombproof,falling raining, splashing hose-directed water and vandal resistant, operation under hostile environments. IK Protection Class DIN EN 50102:IK07 Mechanical and Performance Data: Switch Contact Material:Gold-on-Gold key switch