Balboa electronics have been used in the manufacture of hot tubs for many years and are the main name in the industry.
Balboa BP2100 (Old part No 56389-04 - 56390-04 - Now 56390-05) Will run : 1) 2 speed pump One or a 1 speed pump One when using a separate circulation pump. 2) 2 speed or 1 speed pump Two 3) 2 speed or 1 speed pump Three (1 speed if you use a blower) Ozone and light 3kw heater Works with TP panels.