This 'wall-wart' style adapter outputs 9 Volts DC (regulated) and can supply a maximum of 1300mA.
The output has a 2.1mm tip with center-positive polarity. The symbol for a center-positive tip looks like this:
Input: 100-240 Volts AC at 50/60 Hz. Input Plug style: North American 2-prong.
Dimensions of plastic housing: 2.73" x 1.58" x 1.1