24V 40VA Control Transformer, Primary 120, 208, 240V Secondary 24V Isolation Transformers,24V Transformer with Foot Mount for HVAC Furnace Multi Tap - - Amazon.com
Mini EI Power transformer AC-AC 220V input 6V 9V 12V 15V 24V transformer double 12V 9V-0-9V 2W/VA Electronic Transformer
110/220VAC to 12VAC 3000mA 3A Center Tap Power Transformer 6V-0-6V 12V AC 6V x 2 | eBay
Series APT | AC Power Transformers are cost efficient and are offered in single or dual 1/2 inch NPT threaded hub mounts. Applications include BAS and HVAC. | Dwyer Instruments