Item Number KH-RK89-425-TBV2 Description The KH-RK89-425-TBV2 is a heavy-duty keyboard built to withstand the corrosive and demanding industrial conditions. It combines a military-grade silicone keypad with a reinforced aluminum alloy housing and an integrated optical trackball. Engineered to pass rigorous salt spray tests, it delivers exceptional resistance to chemicals, abrasion, and environmental extremes for reliable operation in critical applications. Ideal for mission-critical and harsh environment installations, including in-vehicle and onboard aircraft systems, nuclear power plant controls, pharmaceutical plant equipment, shipboard consoles, and other demanding industrial settings where exposure to chemicals, vibration, and liquids is a constant challenge. • Military-grade silicone rubber keypad resistant to chemicals and abrasion • Built in a reinforced aluminum alloy housing. • Integrated ergonomic optical trackball • 89 silicone backlight keys ensure clear visibility in dark or low-light areas • Designed with panel mounted installed solutions. • Customized design is optional. Connector Power Supply OS Compatibility Temperature Range Silicone keyboard with metal panel USB, PS/2 5.0V DC ±5% All Windows versions, Vista/Linux/Unix/Mac OSX/iOS/Android Storage: -20°C to +90°C Operating: -25°C to +80°C 30-95% RH (operating) Email: [email protected] Tel.: +86-755-84283383 Mobible/WhatsApp: +86 13480694264 Address: 7F, R&D Building, Shenglongxing Industrial Zone of Gaoqiao, Pingdi, Longgang Dist., Shenzhen 518000, China