1- 2 speed pump cable. 1- blower or 1 speed pump cable. There are two patented technologies that set balboa apart from everybody else, the first makes the spa side controller the most reliable in the world, and the second eliminates the pressure sensor switch and flow switches that every other control uses. Simply put balboa controls eliminate the two biggest failure components on your spa heating and control system, and because they are patented technologies no one eles can offer them!New balboa hot tub spa control vs501z retrofit kit pools & spas don’t take my word for it, look right here on e-bay and on other online psa supply shops. There is a good reason why you pay more for balboa and why most of the top brands of spa like beachcomber insist on using balboa for all their control and heating systems, you pay a bit more up front, but you get a much better product. Do it right the first time, do it with balboa! This is a new unit not a referbished unit!