The Timer-R digital timer has a large easy to read screen, a grow room friendly green back lit screen and an easy to use cross button for programming. The Time-R has many new features not seen on Hydroponic timers before.The Mojo Cow Time-R operates like a normal timer but has a multitude of other options for controlled switching that go down to one second intervals if needed. The Time-R can run a fan/pump with different settings at night, or dispense CO2 using precise dosing at particular times throughout the day, giving the grower complete control.Features:Three mode system functions.Timed: Set precise on and off times, up to 15 times a day.Repeat: Turn equipment on and off, repeating at regular set intervals, from 1 second to 99 hours.Combined: Run your equipment on and off repeatedly at set intervals throughout a 24-hour period. Maximum 3 group settings.​