Brand New Spa Controller. 6600-155, 6600- 094, 6600-057, 6600-098, 6600-092, 6600-056 are the same boards with different micro chips. Just swap in chip set from your own board if needed. The item “Spa control /Sundance/Jacuzzi spa circuit board 6600-056 REV. C” is in sale since Tuesday, May 02, 2017. This item is in the category “Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Spas & Hot Tubs”. The seller is “hfb_store” and is located in Las Vegas, Nevada. This item can be shipped to United States.