420020007S Control Board Kit for MasterTemp and StaRite Pool and Spa Heaters Compatibility Designed for all MasterTemp NA and LP series pool and spa heater electrical systems Works with MasterTemp 200, 250, 300, 400, and 400HD models Compatible with StaRite MaxETherm SR200NA, SR333NA, SE400NA, SR200HD, SR333HD, and SR400HD control boards Quality Construction Built with FR2 copper foil laminate for durability and stable performance Upgraded solidstate capacitors ensure longlasting reliability precision soldering for secure and consistent connections SR waterproof coating offers insulation, moisture resistance, and leakage protection Performance and Protection Equipped with enhanced solidstate capacitors and grade power chips Includes improved optocoupler and regulated power module for stable operation Features builtin overheat, overvoltage, and shortcircuit protection Provides faster output control and more efficient heater performance, reducing downtime and ensuring consistent heating Function Improves heater efficiency for pools and spas by optimizing heating cycles Reduces pump running time for lower operational costs Designed to resolve common heater control board issues such as failure to start, inactive display, or slow water heating Offers quicker response times and consistent heating output Practical Applications Ideal for residential pools where energy savings and reliable heating are priorities Suitable for spas requiring fast recovery and stable water temperatures for commercial pool facilities needing dependable heater performance to maintain customer satisfaction Material and Size FR2 copper foil laminate construction for strength and conductivity Compact design fits all compatible MasterTemp and StaRite models without modification This 420020007S Control Board Kit delivers dependable performance, advanced protection features, and improved efficiency, making it a practical solution for maintaining pool and spa heating systems.