The Recycle Adjustable Timer features: 1 minute to 60 minute ?ON? time, 5 minute to 12 hour ?OFF? time, LED indicator light, and adjustable ?ON? modes for day, night or both use. For use with pumps, fans or CO2 systems. Housed in a rust, dust and water resistant enclosure, this controller will function in the toughest environments. Ratings: 12 Amps maximum/120 Volts/60 Hz.