The Correct Tech CTI Mini Max topside is designed for compatible spa-control applications where a user interface panel is needed. A topside panel is useful because it gives the user direct access to system functions such as jets, auxiliary features, lighting, and heat, supporting convenient day-to-day control.This replacement is especially useful when the original topside is damaged, unresponsive, worn, or no longer displaying or activating functions correctly. Matching the correct Jets, Aux, Light, and Heat layout helps preserve intended operation.The 1-628B-S is a practical service part when a compatible CTI spa system needs a topside to restore dependable user control. Correct Tech CTI Mini Max topside Jets, Aux, Light, and Heat layout Designed for compatible spa-control applications Useful when the original topside is damaged or unresponsive Supports cleaner and more dependable system control