1.Underwater light                     
2.Water pump control                         
3.Blower control                        
4.Constant temperature heating                  
5.Heating temperature/timing setting                                                             
6.Stereo redio system/CD input                                                                         7.Search/storage channel automatic                                                             
8.Ozone disinfect                     
9.Water inlet automatic*                                  

 the function  with "*" is optional by customer.