DU-5K NEMA 4/4X Industrial Keyboard Overview - Industrial Keyboard The DU-5K industrial keyboard is designed to meet NEMA 4X specifications. Featuring an ABS polycarbonate case, 116 keys including 24 function keys, and a Force Sensing Resistor pointing device. This keyboard offers a lifetime of over 10 million cycles, can operate in conditions from -20° to +60° C, and is 100% humidity resistant. Mounting holes and both PS/2 and USB options make this industrial keyboard a versatile solution to your needs for a keyboard that can operate in the harshest conditions. Meets NEMA 4 & 4X 116-keys functionality Integrated pointing device Industrial silicone rubber keypad Mounting holes in case 24-function keys 10-key numerical keypad Greater than 10 million cycle lifetime -20° to +60° C operating temperature rating 15"W x 6.5"D x 1.5"