control panel used stainless steel printing apply to outdoor and all kinds of public places can provide PS/2 or USB interface Technical/material parameters - Panel: Import high-strength stainless steel. - Keys: stainless steel tensile convex keys, chemical etching, imports color oil printing. - Boards: aluminum. - Track ball: wear-resisting stainless steel ball, mirror surface treatment. - Rotate: 360 degrees. Electrical properties - voltage:                                 5.0 VDC + / - 5% - current:                                 10mA - with emc standards:               EN55022 (B) : - track board resolution:            X > : 200dpi  Y: > 190dpi - service life:                            more than 2 millions. - track ball activation velocity:    60 - 100 G - electrical life:                         50,000 hours (power open) - operating temperature:          - 30 ~ + 85 Celsius degree - storage temperature:             - 40 ~ + 90 Celsius degree Reliability - MTBF:   >   20000h - MTTR:   <   30m Panel size:                            330mm*100mm