Type of product: Balboa electronic control pack with paired topside control Make and model: Balboa GS520DZ control box and Balboa VL801D topside control Power: Volts: 230vac Hz: 50 KW: 3 Specification: Pump 1: Single or dual speed pump + circulation pump if required. Pump 2: Single or dual speed pump Air Blower: x 1 (optional) Heater: x 1 (3KW) Ozone: x 1 Light: x1, 12 volt Radio, TV/AV: Point available Compatible with: Any retrofit system, suitable for upgrades Connections: 2 inches socket heater union sleeves. Amp cables plug onto the PCB to operate the components. Dimensions of Box: 270mm x 500mm (inc heater) 320mm (box only) x 120mm Dimensions of Topside: 187mm x 83mm Topside buttons: TIME, MODE, WARM, COOL, BLOWER, LIGHT, JETS 1 and JETS 2 Additional notes: The M7 technology means you do not need to have sensors and flow switches going back into the tub as everything is done inside the control box by 2 sensors.This deluxe Touch Pad or Topside control allows you to set your preferred filter times by a built-in clock. Its large screen also gives you detailed information about the operation of the Hot Tub and symbols display when the individual components are running. This system also displays when it is in a filter cycle and you can read the time from it also.*FREE CABLE PACK* this includes... 2 x 4 pin cable (2-speed pump) 2 x 3 pin cable (1-speed pump, blower or ozone) 1 x 2 pin cable (Spa light) If your system has a circulation pump as well as 3 separate boost pumps you will need to buy another 1 x 3 pin cable.*SPECIAL NOTE* J17 IS A PORT THAT ALLOWS YOU TO RUN EITHER AN AIR BLOWER OR ANOTHER SINGLE SPEED PUMP. THE PORT IS PROTECTED BY A 10 AMP QUICK BLOW FUSE.