Output ripple: less than 30mV Switching frequency: 1.5 MHz (highest), usually 1 MHz Operating temperature: 45 Celsius to 85 Celsius Adjustable: You can adjust the 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 : 4.5V to 28V Output : 0.8V to 20V Output current: 3A (maximum) Conversion efficiency: 96% (maximum) Model Number: Ultra-Small Size DC-DC Power Supply Module MP1584EN 3A Adjus Phase: Single Phase Current Type: DC size: 22 x 17mm colour:Green Material:plastic Package Contents: 5 x Adjustable Power Supply Module(The coding direction is random and does not affect the use, and you cannot to specify the coding direction) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.