Adjustable Recycling Timer ART-DNe, C.A.P. You can use C.A.P.s Adjustable Recycling Timer (ART-DNe) to control all kinds of indoor gardening equipment including ozone generators, exhaust fans, hydroponic pumps and more. They simply determine their desired timing intervals and set the timer accordingly. The on time for the Adjustable Recycling Timer is 1 second to 40 minutes and the off time is 1 minute to 8 hours. This unit also has a photosensor to trigger equipment to run during the day, the night or both day and night. The Adjustable Recycling Timer is rated for 15 amps at 120 volts with a three-year manufacturer warranty.