AC-DC Switching Regulated Power Supply 12V DC @ 500mA; 2.1 x 5.5mm (+) center polarity
by PHC Enterprise, Inc.
$13.00
Part #: SW-1250AR
Input: 100~240VAC
Output: 12VDC @ 500mA
Plug: 2.1 x 5.5mm 
Wall-mount