KNACRO High-Voltage Constant Current Power Supply Module LED6-20W Drive Module DC-DC Constant Current Module Reverse Connection Protection 8-80V

Input voltage: 8-80V. Current: constant current 1.4A. Input: IN. Load side: OUT. Reverse connection protection?YES. Size:21 * 15 * 14 mm / 0.81 * 0.6 * 0.55 in?L *W *H?. Weight?4.8g/0.18oz. Applications: Used as high-power LED constant current driver module. 1.determine the need to drive LED current and the maximum operating voltage. 2.10A current with a multimeter to measure the output short-circuit current file to see if the output current reaches a predetermined LED operating current. 3.connected to the LED, the test machine. 4.2-3V constant differential pressure can be normal three strings of lights 3W power LED, but the brightness lower. Tested 9.5V can be lit three strings 3W power LED 12V can be lit constant. (Steps 1 through 3 are: power supply input connected to the output load is not connected LED lights.). Note: This module is used in more than 20W, please enhance heat dissipation.