The battery-powered sprinkler controller with automatic jar top valve is ideal for scenarios where you want to add a sprinkler or drip valve but do not have sprinkler wires running to it. The valve is the highly reliable, easy-to-service jar top style which you can install directly to the mainline or side-by-side as part of a multi-valve manifold. The timer can control up to four-valve solenoids in the same valve box. The timer is engineered for installation in an outdoor environment, including in a valve box. The control dial is removable from the body for easy programming and battery changes. Under normal usage, 2 AA alkaline batteries will power the controller for a full season. The A and B program slots allow you to set up two unique watering schedules tailored to different types of zones in the yard. Each program has space for four different start times which allows you to create cycle and soak windows that encourage water infiltration into the soil. The battery-powered sprinkler timer will automatically “stack” overlapping runtimes from different programs so that only one solenoid is running at any given time. The manual run feature allows you to run one zone, select zones, or all zones for a specified length of time, which is very convenient for zone testing or supplemental watering. The rain delay feature allows you to skip watering of zones for a configurable time when Mother Nature is taking care of the watering. Installation is as simple as installing the valve, putting batteries in the timer, setting the schedules and placing the mounting clip and timer on the latching solenoid. We recommend 1-inch MPT PVC-Lock (for use with PVC pipe) or Blu-Lock (for use with poly pipe) fittings for fast, glue-free installation of the valve. For outdoor irrigation use with cold water only.