Amazon.com: Class II Transformer - 12 Volt AC, 40 VA, UL/CSA Approved : MGT-1240 : Electronics
Dayton Control Transformer, 250VA VA Rating, 277VAC Input Voltage, 24VAC Output Voltage - 4MTR9: Amazon.com: Industrial & Scientific
Amazon.com: Functional Devices TR40VA004 Transformer, 40 VA, 277/240/208/120 to 24 Vac, Foot and Dual Threaded Hub Mount : Electronics
24V 40VA Thermostat and Doorbell Transformer, Power Supply Compatible with Nest, Ecobee, Sensi and Honeywell Thermostat, Nest Hello Doorbell and All Versions of Ring Doorbell (Style 1) - - Amazon.com
Amazon.com: Functional Devices TR375VA001 Transformer, 375 VA, 120 to 24 Vac, Foot Mount, Dual Bottom Openings : Electronics
Functional Devices TR40VA022 Transformer, 40 VA, 120 to 24 Vac, Foot and Dual Threaded Hub Mount, 30.00" Secondary Wires: Electronic Transformers: Amazon.com: Industrial & Scientific
Isolation Transformer, Low Voltage, 100 VA, 1 x 230V, 2 x 115V, 10V, 10 A: Electronic Transformers: Amazon.com: Industrial & Scientific
Amazon.com: PWS-2420 24VAC 20VA Class II Power Supply AC Adapter UL 24V Transformer Plug with terminals : Industrial & Scientific
EX ELECTRONIX EXPRESS Variable Transformer, 500 VAC Max, 0-130 Volt Output, 5 Amp: Power Converters: Amazon.com: Industrial & Scientific
Isolation Transformer, Open Style, 3.78 VA, 1 x 234V, 2 x 117V, 2 x 6V, 600 mA: Electronic Components: Amazon.com: Industrial & Scientific
Amazon.com: Dayton Control Transformer, 50VA VA Rating, 240/480VAC Input Voltage, 120VAC Output Voltage - 31EG97 : Industrial & Scientific
24VAC, 40 VA AC Transformer Plug in with PTC Fuse Compatible with Ring Nest Doorbell UL Listed - - Amazon.com
Amazon.com: Endurance Pro EI Type Isolation Transformers PRI.120/208/240 V AC 50/60Hz 24 V AC 40 VA 4031F Class 2 Control with Foot Mount Replacement for Jard 4031F HVAC Furnace Multi Tap Packard
Amazon.com: Toroidal Transformer, 100 VA, 2 x 12V, 4.17 A, Panel : Industrial & Scientific
Amazon.com: Dayton Control Transformer, 75VA VA Rating, 240/480VAC Input Voltage, 24VAC Output Voltage - 31EH40 : Industrial & Scientific
Isolation Transformer, 240 VA, 1 x 115V, 24V, 10 A: Electronic Power Transformers: Amazon.com: Industrial & Scientific
Honeywell AT150F1022 - Transformer, Plate or Panel Mounted 120/208/240 Vac, 24V AC @ 50 VA - - Amazon.com