Perfect Fitment: Local Display Directly replaces Hayward Goldline PL-P-4 ProLogic and AquaPlus (PL-PLUS) automation systems. Advanced Pool Control Capabilities: Controls up to 16 devices (4/8/16 relays), 2 heaters, and solar systems for pools/spas. Industrial-Grade Durability: Corrosion & UV-resistant housing – Built to withstand harsh pool environments. User-Friendly LCD Interface: Backlit LCD screen clearly displays pool status (temperature, pump cycles, etc.). Hassle-Free Support: Backed by responsive customer service – Contact us for troubleshooting or returns. GLX-PL-LOC-P-4 Local Display Controller Keypad Fit for Hayward ProLogic PL-P-4 & Goldline Pro Logic Automation Systems and Chlorination