Class 2 transformers are generally low-powered and used in commercial and residential settings. Take a look at the features for Functional Devices Inc / Rib Class 2 Transformer. Input Voltage: 120/208/240VAC, Output Voltage: 24VAC, Va Rating: 40.FeaturesEnclosure Finish: No FinishOutput Voltage - Transformer: 24VACPrimary Connection: PigtailsHz - Electrical: 50 Hz, 60 HzMounting - Transformer: 1/2" Hub, FootGreen Environmental Attribute: Product Contributes To Reducing Energy ConsumptionWidth: 2.69"Standards: UL5085-2 or UL5085-3; USA & CanadaInput Voltage: 120/208/240VACIncludes: Inherently IsolatedDepth: 2.19"Item: Class 2 TransformerItem - Transformer: Class 2 TransformerHz: 50/60Phase - Electrical: 1Secondary Connection: 8" LeadsTemp. Rise: Not RatedEnclosure Type: OpenMounting: Foot or 1/2" NPT HubProtective Device: Inherently LimitedPhase: 1Output Voltage: 24VACVA Rating - Transformer: 40VAInput Voltage - Transformer: 120VAC, 208VAC, 240VACEnclosure Style - Transformer: OpenHeight: 2.88"VA Rating: 40Enclosure Rating: Not Rated