SPAGUTS VS300FC5 Single Pump Spa Controller Kit w/Topside, 54855 SpaGuts OEM P/N: 54803-01 This controller operates on 110/220V 60Hz (220V requires 4-wire service). The SpaGuts brand VS300FC5 controller is equipped with Balboa Water Group's patented M7 technology which allows the heater to be mounted either on the suction or discharge side of the pump for simplified installation. SpaGuts brand Spa Controller VS300FC5 Kit, is powered by Balboa Water Group. It also includes the popular VL200 model Mini Oval Topside Panel that is common on many spas, but has the Upgraded 4-button UP and DOWN keys Versus the standard entry level 3-button single TEMP key. Note that this can be an "Optional" replacement for the 54219-z Balboa VS500Z Spa Controller Kit with Mini Oval Topside Panel. If your spa does not use a small circulation pump and/or Audio Video, and you are looking for a replacement control system or controller kit, this "VALUE KIT" provides Huge savings! Field Configuration, Installation, Setup and Wiring is required, and Highly Recommended by an experienced licensed professional. This item comes with a 2 year manufacturer's limited warranty from the original purchased date. FREE GROUND SHIPPING TO THE 48 US CONTINENTAL STATES. Signature is required upon delivery of package.