Hayward GLX-PL-LOC-P-4 Local Display Replacement for Hayward PL-P-4 Goldline Pro Logic Automation and Chlorination Local display replacement Fits hayward goldline PL-P-4 Pro logic automation and chlorination Genuine hayward replacement part. Manage 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 equipment.