Feature:1. 6-50V 1-3A for buck high brightness LED driver is with 5000: 1 dimming function, which is practical.2. Supports maximum output power of 72W (36V or 2A), LED driver has up to 1MHz switching frequency3. Single pin on or off and brightness control can be finished by using DC voltage or PWM.4. Inherent open LED protection, which can keep over temperature drop current function for adjustable constant LED current with up to 97 percent efficiency.5. With function of high-end current detection, such LED driver board is easy to use in the practical life.Specification:Item Type: LED Driver ModulePattern 1: H 1A 8-50V or H 2A 8-36V or H 3A 8-16V or L 1A 6-16V or L 2A 6-16V or L 3A 6-16VPattern 2: With Terminal or Without Terminal (optional)Working Voltage: L-type DC 6-16V, H-type DC 8-50V (perfect for 6V or 9V or 12V or 18V or 24V or 36V or 48V LED driver)Output Current: 1A or 2A or 3ABy Changing for RCS Resistance,Maximum Current: 4AMaximum Output Power: 72W (36V or 2A)Current Regulation: 1 to adjustable resistance 2 via PWM controlSwitching Frequency: Up to 1MHzCurrent Accuracy: Typical 5 percent outputIntrinsic Open LED Protection: SupportHigh Efficiency: Up to 97 percent Size: Approx. 45 x 21 x 16mm or 1.77 x 0.83 x 0.63inWeight: Approx. 11 g or 0.4 oz (without terminals)Approx. 14 g or 0.5 oz (with terminals).Package List:1 x LED Driver Module