Rainbird ESP-RZX Series 4 Station Outdoor Mount Controller, 120V 4 station indoor/outdoor sprinkler controller - 2 AAA batteries included for time/date backup Zone-based scheduling allows every valve to be scheduled independently Large LCD display shows all of the programming for each zone at the same time Easy-to-navigate user interface - 6 independent start times per zone for maximum flexibility Weather sensor input with software override - Requires only 2 mounting screws