'Class 2 Transformer, 57 VA Rating, Input Voltage 115VAC, Output Voltage 28VAC, Foot Mounting, Protective Device None, Primary Connection Line Cord, Secondary Connection Solder Terminals, 1 Phase, 50/60 Hz, 49 Degrees C Temp. Rise, Open Enclosure Type, Enclosure Rating Not Rated, Enclosure Finish No Finish, Height 2.25 In., Depth 1.15 In., Width 3.15 In., Standards -'