Traxsys Roller Plus  A robust trackerball with extra functions. Latching drag as on the Roller and with buttons that allow only up/down or left/right movements of the pointer. Button to control pointer speed. Buttons can be replaced by switches using the Roller Plus Switch Box which is now included. Comes with a removable guard to avoid unwanted button presses. Screw holes underneath allow easy fixing to a surface or wheelchair tray.
Which connector do I need?
Mounting systems and mounting plates This device is also available as a joystick version. | 
