Check the listing for details. Bundled System VS501Z Retrofit Kit Complete (Controls Primary Pump, Heater,. Color: Black, Condition: New. Listed at 809.99 USD. Balboa Bundled System VS501Z Retrofit Kit Complete / Mini-Oval / Retrofit Bezel w/ Cords (Pump 1, Blower or Pump 2, Light, Ozone) - 54220-ZThe Value Series (VS) family of Hot Tub Control Systems are designed using Balboa's patented M7 temperature and flow sensor technology and universal control platform. The universal control platform increases feature flexibility while reducing installation and configuration problems. Balboa's patented M7 temperature probe technology eliminates failure prone pressure switches while simplifying installations by not having to drill additional holes for sensors. Systems have a plastic enclosure to eliminate water intrusion. Connectors are built onto the circuit board minimizing wires and simplifying service. All models feature convertible power supply and Powered by Frooition Frooition | No-js Template | eBay design, eBay store design, eBay shop design, eBay template design, eBay listing design (ver:froo_no_js) This listing is currently undergoing maintenance, we apologise for any inconvenience caused.