Amazon.com: Class II Transformer - 12 Volt AC, 20 VA, UL/CSA Approved : MGT-1220 (2 Pack) : Electronics
Philmore 48-1220 Class 2 Transformer 12V AC 20VA
Amazon.com : Amseco XF-1220 12VAC 12V 20VA Transformer Power Supply for Alarm Security Systems : Electronics
Amazon.com: Control Transformer 20W 20VA Power Transformer, 50Hz~60Hz Input Voltage AC 110V/220V/380V, Output Voltage Single/Dual 6V 9V 12V 15V 18V 24V to 220V (Color : Input Voltage 110V, Size : 6V) :