Time-R Digital Timer - an all-new concept for the hydroponics industry The Timer-R digital timer has a large easy to read the screen, a grow room-friendly green backlit screen and an easy to use the cross button for programming. This is just scratching the surface as the Time-R has many features never before seen on a timer…. until now. The 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. If you want to run a fan/pump with different settings at night, or you want to dispense CO2 using precise dosing at particular times throughout the day, the Time-R has you covered. 3 Modes: Timed Mode: Set precise on and off times, up to 15 times a day Repeat Mode: Turn your equipment on and off at regular intervals, min. from 1 sec and up to 99 hrs Combined Mode: Using this mode allows you to run your equipment on and off repeatedly at set intervals throughout a 24 hour period. Maximum 3 group settings