The POSB12200A is a switched-mode, constant voltage power supply that provides 12 VDC voltage at a maximum current of 2A. The output power rating is 24W. The output voltage is adjustable by 4-digit up/down thumb wheel switches located on the rear panel. It is manufactured by POS and has an efficiency rating of up to 89%. It has short circuit, overload, over-voltage, and over-temperature protection built-in. Additionally, it is UL, CUL, TUV, CE, CB, and RoHS certified.