This small profile power supply was developed to convert  120V voltage to 12V for low voltage products such as our 4T tape light and 4D disc lights. The driver comes pre-assembled in a compact, code-approved wiring compartment, allowing for installation in tight spaces, like within cabinets. The 4TD 12V direct wire dimmable power supply is best suited for residential applications but can be used in light commercial applications with limited daily use