The Davey Spa Power 601 is a spa controller system designed for small to medium-sized spa pools, offering a range of features and configurations. It includes a heater (1.5kW, 2.0kW, or 3.0kW models) and a poolside touchpad for user control. The SP601 can manage a single or two-speed pump, a blower, ozone generator, a 24hr circulation pump, and a single or variable color LED light.