The Pentair 520657 UOC8 Auxillary Replacement Motherboard is for use with Pentair EasyTouch pool and spa automatic control systems.

• Pentair EasyTouch Control System UOC Motherboard with 8 Aux/Circuits for Pool and Spa Combination systems (dual bodies of water with one set of equipment).• 8 Auxiliary UOC motherboard replacement • Fits Pentair EasyTouch pool and spa automatic control systems • Measures 7-inch length by 3-inch height by 12-inch width