These are the keyboards from KIT3700 Series. They are complete travel industrial keyboards featuring 101 or 104 key functionality. This rackmount keyboard has a NEMA 12 ( IP54 ) sealing. It has a molded, changeable polyutrethan seal as well. It features a highly reliable and good quality trackball mouse pointer. The diameter of the trackball is 1.5" and is formed in a Teflon sealed ring which is in a metal collar.