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