Ergo Systems Auto Pet Feeder, Medium, Gray All Ergo feeders feature digital timers with battery backup for programs, the manual override switch, an 8 program settings per day and a daylight saving feature.; Material Plastic, Electronics; Product Dimensions 23x10.5x10.5 Helps to maintain your pets health UL and CUL approved Unlike vertical augers in other automatic dog feeders, Ergo's dog feeder has a horizontal feed auger system, which provides precise control over feed rate You can feed you pet at appropriate time