Sentinel Master Digital Timer

Accurate timers are important for hydroponics, and Sentinel has developed a timer that's specifically designed to control the critical timed functions of an indoor garden. Designed to control pumps or other devices that must be activated on a repeating cycle, the Master Digital Timer offers an extremely wide range of time delays, it can be set in hours, minutes and seconds, and its "hot start" prevention keeps ballasts from re-firing HID lamps until they properly cool. It's protected against overloads by the use of a resettable circuit breaker, and it features a modifiable photoperiod, providing light at whatever duration is needed. It also has a built-in temperature sensor that automatically shuts down the lighting system to prevent disastrous overheating. Its entirely digital design makes it extremely precise, and its intuitive user interface make it easy to set up and use. The Master Digital Timer has four receptacles that can control up to 15-amps of power, including one for "day" devices like lights, and another for "night" devices like dehumidifiers.