Hayward SP23115VSP MaxFlo VS 0.85 HP Variable-Speed Pool Pump, Energy Star Certified Designed to replace existing 115V single-speed pumps without the need for electrical upgrades Built with a permanent magnet motor for up to 80% energy savings over ordinary single-speed pumps Integrated, programmable, rotatable digital interface with 24-hour clock and up to 8 custom timer functions. Optional wall mount kit available to remotely locate digital interface Can be connected to any automation system using relay controls Can be connected to any automation system using relay controls