Power Transformers: Type - Power Transformer; Primary Voltage - 115/230V AC; Secondary Voltage - 24V AC; Output Rating, Current - 4.0A; Power Rating - 96 VA; Frequency - 50/60 Hz; Number of Outputs - 1; Construction Style - Bobbin; Mounting - Chassis; Terminals - Wire Leads; Insulation Class Rating - Class B; Temperature Rise - 35 deg C; Dimensions - 3.81"Hx3.12"Wx2.81"D; Weight - 4.0 lbs; Additional Information - RMS Test Voltage (Sec.): 1500, Mounting Hole Size: X=3/16", U=13/64x3/8", A=3/8x3/16"