Product Description: The Linepro LP-3035 Industrial Metal Keypad is a rugged 4×4stainless-steel keypad designed for demanding industrial and public-utility applications. Built on a rigid PCB with metal-dome switches, laser-engraved keys, and IP65 spill- and dust-proof protection, it ensures long-lasting performance for fluid dispensing machines, kiosks and other unsupervised systems. Key Features: #304 stainless steel construction for rugged durability IP65 spill- and dust-proof protection No removable keycaps for enhanced vandal resistance Rigid PCB-backed design with metal-dome switch technology Laser-engraved key symbols for long-lasting visibility Rack-mount / top-mount installation options RoHS compliant Key switch lifespan of more than 10 million operations Product Deatils: Model: LP 3035 Number of Keys: 16 Material: 304 stainless steel Dimensions: 98 × 98 mm Gross Weight: 0.25 kg Key Travel: 0.4 mm Key Symbol/Lettering: Laser marking Input Voltage: DC 5V ±5% MTBF: >50,000 hours MTTR: <30 minutes Operating Temperature: –40°C to +70°C Relative Humidity: 30% to 90% RH Air Pressure: 60–106 kPa