Description The 4 Amp power supply can operate up to 24 iFEED units.Please note: This is a US model operating on 110V.Schedule up to 28 feeding times over a 24-hour period. Installation & User Guide * iFEED has a 30-day money back guarantee. (Not incl. shipping).Product must be undamaged, and in its original packaging for a full refund. Dimensions iFEED unit:Length: 21”Width: 10”Depth: 7”Capacity: 12 poundsFunnels: Long: 10.5” L x 2.25” WShort: 8.5” L x 3” WPower supply:Length: 9”Width: 7”Depth: 4.5”TroughsStraight back trough: 15.5” wide x 13” deep (front to back) x 17” tall. Slant back trough: 15.5” wide x 13” deep (front to back) + additional 6” for slant x 15.5” tall (incl. slant part). Instructions Installation & User Guide iFEED Automatic Horse Feeder Stainless Steel Bracket InstallationAttaching the funnel