... AC 12V LED products, it only dimes DC 12V-48V LED strip lights and LED modules. Product Specifications ... button, fluorescent indicator, users friendly.5. 25%,50%,75%,100% , 4 DIY modes, fast adjustment ... a constant voltage power supply to connect LED controllers or dimmers.- Connecting controllers or dimmers ... Important Reminder:For all of our LED controllers and LED dimmers, no matter constant current ...