Easy to program, indoor model with 6, 9, or 12 stations. Control module can be removed and programmed elsewhere then reinstalled. 3 separate and independent programs, 3 daily start times per program, run times from 1 minute to 5.9 hours per start time per program. 7 day weekly watering schedule. Skip interval from 1 to 15 days. Set or change program even during a watering cycle. Uses a 9 volt alkaline battery for saving program in case of power failure. Identifies shorts and open circuits in the event that valves are malfunctioning. Ship wt 5#.