New-Open Box Upgraded for Hayward GLX-PCB-PRO Main PCB Replacement Goldline ProLogic Automation and Chlorination, Blue Main Printed Circuit Board,PL-P-4,PL-PS-4,PL-PS-8-V,PL-PS-8,PL-PS-16-V,PL-PS-16 Compatible with all ProLogic , goldline aqua logic automation pl-p-4, pl-ps-4, pl-ps-8-v, pl-ps-8, pl-ps-16-v, pl-ps-16, Please ensure reasonable settings. There are many internal parameters, and you need to access the menu to turn on the switches to control the pool lights and other functions. All products have passed the testing and are qualified. Save money and time: For hayward replacement part directly replace the old board, and all functions can be restored in one step. Where upgraded: The silver contacts of the relay have been enlarged, enabling it to withstand larger inrush currents. Reverse protection diode has been added, effectively reducing the impact of inrush currents on the power supply. The power of the resistors has been increased to extend the service life. Stronger performance: The voltage withstand capacity and capacitance of the electrolytic capacitor have been increased, allowing the maximum voltage withstand to reach 60V. The increase in capacitance can more effectively provide a more abundant power supply for the TCELL,enhancing work efficiency. GLX-PCB-MAIN main printed circuit board work with T-CEEL 3,T-CELL-5 ,T-CELL-9,T-CELL-15 automation and chlorination.