The Spartan Series? Repeat Cycle Timer is an easy to use and reliable product. It features a 5 second to 30 minute ON time, a 5 second to 60 minute OFF time and adjustable modes for day, night or 24 hours. Designed to precisely control pumps, CO2 systems and fans. The Repeat Cycle Timer features a durable enclosure. 15 Amps maximum/120 Volts/60 Hz.