These 26 key handheld membrane keyboards have an integrated 38mm laser optical trackball.  The ball is removable, the
trackball optical lenses are accessible from the front and can easily be cleaned without dismantling the complete unit.  The
keyboards are IP65 sealed and mounted in a very stylish and robust ABS housing.  They have numeric and function keys; the control keys are available via “Fn” key mapping.  Ideal for applications requiring only a limited number of key functions with fast and comfortable key access and a precise cursor control.