DESCRIPTION: 304 Stainless steel Keypad (Encryption available) MAIN FEATURE Faceplate Dimensions: 100mmx91.5mm Dustproof, Water proof, Vandalism resistance, Shakeproof, Pickproof Mounting type: Rear Mounting No. of keys: 16keys, high quality stainless steel. Keyswitch Technology: Silicone switching element keyswitch lifetime: > 5 million of operations. Actuation Force/travel: 1N/0.45mm Mounting Rack: Aluminum alloy Lettering: laser engraved legends for excellent durability G.W. 0.75kg TECHNICAL DATA · Lifespan :> 5 years. · Interface: USB, PS2, RS232 available. · Supply Voltage: +5V DC +/-5% · Protection Level: IP65; NEMA4X · Operating temperature:-10C to +60C. · Storage temperature: -20C to +70C. · CERT: Passed the certification of China Central Bank Card Testing Center, RoHS, CE and FCC. All languages version and interface are available on request.