TRACKBALL keyboard

Electrical Data:
Max. input power -- +5 Vdc +/-0.25 V @100mA max.
Phantom key lockout
Serial data output -- Synchronous 8-bit 

Product Dimensions:
Height -- 1.63 inches
Length -- 18.00 inches
Depth -- 9.4 inches

Each Package Contains:
Trackball keyboard
User's guide

Package Dimensions:
Height: 2.5 inches
Length: 21 inches
Depth: 11 inches
Weight: 4.4 pounds

Mechanical Data:
Tot. travel -- 0.150" +/- 0.020"
Travel to peak -- 0.050" +/- 0.010"
Peak force -- 35 grams to 80 grams