Power low-voltage HVAC control systems with the Packard PF105 40VA Class II Foot Mount Transformer. It's designed to provide reliable 24V output from 120V, 208V, or 240V line voltage sources. Ideal for use in thermostats, relays, and furnace control circuits, this compact transformer supports a wide range of residential and light commercial heating and cooling applications. This Class II design limits output current to meet NEC safety requirements and helps prevent system damage in the event of overload. The foot-mount housing simplifies installation onto control panels, air handlers, and furnace cabinets, while the 2.756 in. (70 mm.) mounting hole spacing ensures a universal fit. Built to replace transformers with equal or lower VA ratings, this 40VA class 2 transformer is trusted by technicians for both field repairs and new installations in air conditioning, heat pump, and furnace systems.