Resideo - Honeywell Home AT40A1121 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 40 Volt Amp; Temperature Rise -20 to 105 Deg F; Enclosure NEMA Type D; Size 2-5/8 Inch Width x 2-3/16 Inch Depth x 2-3/32 Inch Height; Mounting Foot; Application Residential Combustion Control System; Approval UL, CSA; Includes Thermostat, Gas Valve, Relay