Pentair 522352 PL4 EasyTouch Control System for Pool or Spa Easy Touch PL4 Control System for Either a Pool or Spa (Single Body System). Controls the pool or spa pump and filtration system and three other pieces of equipment. Excellent for controlling lighting, heaters, heat pumps, spa controls, water features and sanitizing equipment. Control panel with integrated easy-to-read LCD display that is easy to operate with its clear, intuitive instructions. Weatherproof control panel can be used in both indoor and outdoor installations.