DIG 400A-MVA 3/4" 1 Station Actuator Battery Operated Controller. Designed for residential and commercial applications or where AC power is unavailable, the rugged 400A series Single-Station Battery Operated Controller is available with a two wire DC latching solenoid and three adapters to fit most valves, or completely assembled on a 3/4″ to 2″ globe valve. Outfitted with the latest and most efficient electronic management technology, the 400A series controller can operate for up to three years on two AA alkaline batteries. It is completely waterproof and able to operate in harsh environments, and offers a simple and dependable solution for any irrigation system above or below grade.