Mini Metal keyboard with trackball & light KMY299I-1 Features: 1.107 keys stainless steel panel mount keyboard 2.High quality medium travel keys 3.Compatible with WINDOWS98/ME/2000/XP 4.Resistant to dirt, dust and liquid 5.Very rugged vandal proof design 6.Can be cleaned with soapy water, disinfectant or other cleaning agents 7.PS/2 or USB interface available 8.Mounting kit and Desktop kit optional 9.Customized layout available Material: 1.Front Panel: high quality stainless steel 2.Keys: high quality stainless steel 3.Trackball: high quality stainless steel 4.Back panel: Aluminum Dimension: 1.Front Panel: 370×110mm 2.Overall: 394×134mm 3.Trackball diameter: 25mm Mechanical Performance: 1.Operating Temperature:-10Cto+50C 2.Storage Temperature: -30Cto +80C 3.Relative humidity: 30%～95% 4.Atmospheric pressure: 50 to 110kPa 5.Lifespan: >1 million operations per key 6.Key travel: 2mm 7.Key pressure: 120g 8.Weight: 2kg Electrical Performance: 1.Voltage: 5.0VDC±5% 2.Electric current: 10mA 3.EMC Emission: EN55022(B) 4.Trackball resolution: X:>200dpi Y: >190dpi Reliability： 1.MTBF: >20,000 hours 2.MTTR: < 30 minutes Approvals： CE，FCC, RoHS，IP65，IK07