Features: Universal 120V to 24V HVAC control converter seamlessly replaces GT446 and SXT105 models, ensuring system compatibility and reliable power conversion. Crafted with corrosion resistant steel housing, this step down converter features strong construction for extended durability in demanding electrical environment. Ideal for HVAC technicians, facility maintenance team, and homeowners search professional equipments for climate control system upgrades or repairs. Perfect for commercial/residential HVAC installations, thermostats wiring configurations, and air handlers unit maintenance requiring stable 24V power supply. Engineered with accuracy wound coils and defense to prevent electric fluctuations, maintaining best performances in heating/cooling systems year round. Specifications: Component : steel Size: about 5.84x7.87cm/2..1in Package Includes: 1xHVAC Control converter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.