<p>1. This Module Is An Adjustable Step-Down Module</p> <p>2. The Output Voltage Can Be Changed By Adjusting The Blue Adjustable Resistor On The Module.</p> <p>3. The Input And Output Voltage Difference Is 1V, And The Minimum Output Voltage Is 0.8V.</p> <p>4. The IN- (Input Negative), IN+ (Input Positive), Out- (Output Negative), And OUT+ (Output Positive) Marked On The Module Must Be Connected Correctly, Otherwise The Module May Be Damaged.</p> <p>5. Need A Professional To Install The Corresponding Accessories To Avoid Damage To The Accessories.</p> <p>Led Constant Current Driver Usage:</p> <p>1. Determine The Operating Current And Maximum Operating Voltage You Need To Drive The Led;</p> <p>2. Adjust The Constant Voltage Potentiometer To Adjust The Output Voltage To About 5V.</p> <p>3. Use A Multimeter With A 10a Current Block To Measure The Output Short-Circuit Current, And Adjust The Constant Current Potentiometer To Make The Output Current Reach The Predetermined Led Operating Current;</p> <p>4. Adjust The Constant Voltage Potentiometer To Make The Output Voltage Reach The Maximum Working Voltage Of The Led;</p> <p>5. Connect The Led And Test The Machine.</p> <p>(Steps 1, 2, 3, And 4 Connect The Module Input To Power, And The Output Is Unloaded And Does Not Connect To The Led Light.)</p> <p>Material: PCB</p> <p>colour: As shown</p> <p>Package Contents:</p> <p>4 x Lithium Battery Charging Module</p> <p>Only the above package content, other products are not included.</p> <p>Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.</p>