There are two ways to dim your LED Light strips; one is the old school way of line voltage dimming where one would use our UL listed Electronic Dimmable LED Transformer (Class 2 LED drivers) that is dimmed VIA TRIAC dimmer switches. This method is most preferred by electricians since most of the existing wiring makes this set up easy. The other method is pulse-width modulation (PWM) that is dimming the low voltage side of non-dimmable, regulated UL listed Class two power supplies such as our XLD series constant voltage LED Drivers. PWM offers very accurate dimming of LEDs but may involve a slightly higher cost to implement.