[Compatibility]: Perfectly designed for Hayward Universal H-Series Low Nox Pool Heater models including H150FDN/P, H200FDN/P, H250FDN/P, H300FDN/P, H350FDN/P, and H400FDN/P. Ensures a precise fit and function for optimal performance. [High Performance]: The FDXLICB1930 FD Series Integrated Control Board is a high-quality replacement for Hayward H-Series Low NOX Heaters. Suitable for models manufactured after September 20, 2004, with model numbers ending in FDN or FDP. [Direct Replacement]: Engineered to meet or exceed original specifications, this control board allows for a seamless installation process. Replace old parts directly without modifications for reliable and stable performance. [Durable Material]: Constructed from upgraded materials for enhanced moisture resistance and durability. The robust design ensures a longer service life and dependable operation under various environmental conditions. [Energy Efficient]: Helps optimize the efficiency of your pool heater. Improves performance and supports overall energy management of your pool system. Product appearance and printed text may vary by batch, but this does not affect functionality. Color: Green Material: Electronic component Package Contents: 1 x FDXLICB1930 FD Integrated Control Board Replacement Kit Note: Light reflection and different display settings may cause slight variations in color between the product and the image. Measurement may vary by +/- 1-3 cm.