Lutron RK-WH Capable of Switching General-Purpose Loads Softswitch Patented Technology Prevents Arcing of Relay Extending Lifetime Optional Low-Voltage Dry Contact Closure Output Provides Integration to Building Management Systems HVAC VAV Mounts to a U.S. Style Junction Box Through a Standard Size Knockout Electrical Distribution Product This item is Lutron #RK-WH White Rotating Dim Replacement Knob Used For Hardware,Door, Gate & Window Hardware Accessories The product is manufactured in United States