Resideo - Honeywell Home AT20A1123 Standard Universal Stripped-Down Transformer

Standard Universal Stripped-Down Transformer; Primary Voltage 120 Volt AC; Secondary Voltage 24 Volt AC; Frequency Rating 50/60 Hertz; Power Rating 19 Volt Amp; Temperature Rise -20 to 105 Deg F; Enclosure NEMA Type D; Size 2-1/4 Inch Width x 1-7/8 Inch Depth x 2 Inch Height; Mounting Panel/Foot; Application Residential Combustion Control System; Approval UL, CSA; Includes Thermostat, Gas Valve, Relay