The DC12V2AS is a switching type AC-DC power adapter. The output voltage is DC12V, 2A, the plug diameter is 2.1mm, and the polarity is center positive.
The DC9V05ANS is a switching type AC-DC power adapter. The output voltage is DC9V, 0.5A, the plug diameter is 2.1mm, and the polarity is center negative.
The DC12V05AS2 is a switching type AC-DC power adapter. The output voltage is DC12V, 0.5A, the plug diameter is 2.5mm, and the polarity is center positive.