AC 24V to DC 12V Power Adapter
14~24VAC to 12VDC 1.0A Converter, or
15~30VDC to 12VDC 1.0A Converter
VB1000
PAC24-DC12-1.0A-VB

Specifications:

* Input power AC14~24V; DC15~30V
* Output power DC12V Regulated
* Output current 500mA
* Dimension 85X25X25
* Approx Weight: 0.30 lb. / Each
* Dimensions (LxWxH): 3.50 x 2.00 x 2.50 in.