About this item 1) High quality Switch Power Supply Widely used in Industrial automation, LED display, communications, etc. 2) You can choose the input voltage (110V/220V) by switch. 3) Smart device surge protection for Shortage Protection, Overload Protection, Over Voltage Protection. 4) Input: AC 110-220V /50-60Hz; Output: DC 12V, 20A/240w. 5) In-Door Use Only! Size: 7.99 x 4.57 x 2.24 inches.