Adjustable:You can adjust the voltage by placing a multimeter on the output in sync with a screwdriver to adjust a potentiometer. adjustments can be made to achieve precise tension.Applications:DIY power supply for mobile devices, monitor power supply, buggies, camera power supply, car power supply, power supply for communication devices, etc.Input voltage: 4.5V to 28VOutput voltage: 0.8V to 20VOutput current: 3A (maximum)Conversion efficiency: 96% (maximum)Output ripple: less than 30mVSwitching frequency: 1.5 MHz (highest), usually 1 MHzOperating temperature: 45 degrees Celsius to 85 degrees CelsiusThe encoding direction is random and does not affect the use, and does not accept the designationMaterial:plasticcolour:greenPackage Contents:20 * Adjustable Power Supply ModuleOnly the above package content, other products are not included.Note: Light 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.