Variable-speed dedicated-purpose pool pump

means a dedicated-purpose pool pump that is capable of operating at a variety of user-determined speeds, where all the speeds are separated by at most 100 revolutions per minute (RPM) increments over the operating range and the lowest operating speed is less than or equal to one-third of the maximum operating speed and is greater than zero. Such a pump must include a variable speed drive and be distributed in commerce either:

(A) with a user interface that changes the speed in response to pre-programmed user preferences and allows the user to select the duration of each speed and/or the on and off times; or

(B) without a user interface that changes the speed in response to pre-programmed user preferences and allows the user to select the duration of each speed and/or the on and off times, but is unable to operate without the presence of a user interface.