Model NO: K-TEK-M270-FN-MS-BL-IL+M73TP DESCRIPTION: 87 keys IP65 dynamic sealed & ruggedized silicone rubber special professional keyboard with sealed rugged touchpad and 12 function keys on top line for easy operation, using reinforced special membrane switch key technology with key stroke (1.20mm) with extremely good tactile feeling for fast and accurate data input without any noise and error output, there will be no key value missing, no stuck key, no repeated key value output during the keyboard operation, The keyboard built-in ultra-thin metal frame and ultra-thin metal reinforcement bottom plate combine the keyboard seal reinforcement into a professional whole, with durable coating & anti-microbial keyboard surface withstand to most chemicals and liquids under harsh environment, FN + Clean combination key for easy cleaning via lock/disable whole keyboard without needing to take away the keyboard from PC, panel mount with super thin ruggedized aluminum back plate with mounting holes, adjustable industrial white backlight included, with USB interface. FN + End button to control keyboard backlight and FN + ↑ or ↓ button to adjust backlight brightness, embedded installation mode. MIL-STD-810H (high and low wide working temperature, low pressure, humidity, vibration, shock, salt spray, temperature shock, drop, rain, sand and dust, fungus, solar radiation etc.). MIL-STD-461G-EMC-EMI-EMS-ESD optional. DIMENSION: Keyboard: 270.0mm x 113.0mm (L x W ) Touchpad: 73.0mm x 76.0mm (L x W