AC-DC Switching Regulated Power Supply 48VDC @ 700mA; 2.1 x 5.5mm (+) center polarity; Part # SW-4807A
by PHC Enterprise, Inc.
$24.00
Part #: SW-4807A
Input: 100~240VAC
Output: 48VDC @ 700mA
Plug: 2.1 x 5.5mm 
Wall-mount