Control Pack - Balboa GS510SZ, 220V Overseas (#55942), Used in overseas 50hz Premium Leisure, Hydro Spa, Mark III, Leisure Edge & Pinnacle Spas Used with "Standard" 6 or 7 button Balboa Panels Only Controls the following system options: Circulation Pump Pump 1 - Two Speed Pump 2 - One Speed Auxillary/Air Blower Lighting Package Stereo Package Ozone Package Includes 3.0kW Heater