Rain Bird SST400IN Simple-to-Set Indoor Sprinkler/Irrigation System Timer/Controller, 4-Zone/Station (this New/Improved Model Replaces SST400I) About this item This timer is so easy to program you won't need the instructions Simple zone-by-zone settings allow customized watering schedules for each area of your yard Designed for indoor installation within a garage, home, or waterproof shed One-touch seasonal adjust allows increase to watering time in hot, dry months or reduction in cool, rainy periods Rain Delay suspends watering for up to 72-hours; when delay ends programming automatically resumes Superior long-lasting durability and built-in surge protection Sealed case to protect against moisture, insects and grime New and Improved model SST400IN timer replaces the Obsolete SST400I