AO Smith AT140A1018 AT140 Voltage Transformer, 40 VA, 208/240 VAC Primary, 27 VOC Secondary, 60 Hz, 9 Inch Leadwi Primary, (2) Screw Terminals Secondary, Universal Mount, NEMA DC 10-2009, -20 to 105 deg F Rise, 3-3/16 Inch L x 2-3/8 Inch W x 3-1/8 Inch D, Includes: Metal End Bells ? Color coded lead wi for primary conn