Brand New ! Product Description GLX-PL-LOC-P-4 Local Display Controller Replacement for Hayward Goldline PL-P-4 Pro Logic Automation and Chlorination, and for Hayward AquaPlus Automation systems PL-PLUS. The GLX-PL-LOC-P-4 local display part is designed For Use With Hayward Goldline PL-P-4 ProLogic Automation and Chlorination. It can control up to 16 pieces of equipment (4, 8 or 16 relays), two heaters and a solar system on any pool, spa or pool/spa with shared or dual appliance. High quality materials, high precision microprocessor structure. Stable operation, durable and reliable housing. Corrosion resistance, aging resistance, long service life. Features a LCD screen for clearly displaying status of your pool, and Control button with description for easier function adjust. By using this display, pool owners can conveniently control various pool functions, making it easy to maintenance your pool or spa.