Features: HVAC Furnace Voltages Changer can convert high-Voltages power to low-Voltages, ensuring that all component can obtain appropriate and stable power supply. Ensure the normal and efficient operae of the equipment, avoiding any adverse effect that maybe caused by Voltages fluctuations. By providing a stable Voltages, control Voltages Changer can reduce the internal pressure on electrical equipment, delay the aging process. Make of ABS materials, corrosion resistance, wear resistance, highly temperature resistance, structural integrity, high stability. It can be used for long terms under various conditions. Easy to use. Specifications: Materials: ABS Installation Hole Spacing: 2-13/16inch Primary Voltages: 120V Secondary Voltages: 24V Capacity: 40VA Frequency: 60Hz Power Limiting: Class 2 Package Includes: 1pc Voltages Changer note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.