Accurate timers are important for a variety of processes, and hydroponic gardening is no exception. Sentinel offers the DRT-1 (Digital Recycling Timer) with programmable accuracy down to the second. The DRT-1 utilizes push-buttons with an easy to read LED display making programing simple and fast. The DRT-1 has been designed to control pumps or other devices that must be activated on a repeating cycle. The built in photocell allows daytime, nighttime or 24-hour operation. The DRT-1 also features two receptacles control up to 15-amps of power, lithium battery backup for settings and a resetable circuit breaker built-in.