Model Compatibility: Designed specifically for H-Series Low Nox heaters, this FDXLICB1930 control board is compatible with models H150FDN\/, H200FDN\/, H250FDN\/, H300FDN\/, H350FDN\/, and H400FDN\/. your model matches before purchase. Energy Efficiency: Equipped with a Header By-Pass design, this replacement control board reduces pump-run time, saving up to 18% in energy costs. It ensures consistent water flow for rapid heating, making it an efficient upgrade for your pool heater. Easy Installation: This plug \u0026 play control board kit for pool heaters includes everything needed for a straightforward replacement. It meets or exceeds specifications, ensuring a and reliable performance without the need for complex setups. Durability and Safety: Made from high-quality materials, the FDXLICB1930 offers excellent moisture resistance and durability against saltwater and chemical . Its stable performance ensures safe operation of your for pool heater over time. Color: As shown Material: plastic Package Contents: 1 set of control boards Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.