Replace Part Numbetr:42002-0007S Control Circuit Board；472610Z Switch Control Pad Compatible With:Compatible With all NA and LP series pool/spa heater electrical systems. MasterTemp heaters: Mastertemp 200, Mastertemp 250, Mastertemp 300, Mastertemp 400. Sta-Rite Max-E-Therm Heaters: SR200NA, SR333NA, SR400NA, SR200HD, SR333HD, SR400HD, 460805 Durable Material：Made of high-quality materials, with strong waterproofing, sturdy structure, and durability.Upgrade of voltage stabilizing power module: Using high-quality filtering capacitors and LM2576HVS power chip produced in the United States, it provides pure DC power to the main control system for faster output control. The high-quality optocoupler module achieves faster and more reliable output control. Attention：Before replacing the Control Circuit Board, turn off all power sources.Open the top of the heater and remove the old circuit board. Remove the film pad from the board and then remove the wire connector connected to the old board. Function:Resolve the existing temperature regulation issues in the swimming pool and improve panel button damage, while increasing heating efficiency We are committed to providing you with high-quality products and meticulous after-sales service.Quality assurance and autonomous innovation are our constant core concept.We offer a 12-month warranty period. 42002-007S 461105 Swimming Pool Heater Control Board with 472610Z Switch Pad Kit Compatible for MasterTemp Sta-Rite Max-E-Therm NA and LP Series Pool/Spa heaters