Fangrui Product Details Wide Input Voltage: 5v-32v Wide Output Voltage: 1.25v-35v Built- 4a Efficient Mosfet Switches Enable Efficiency Up To (lm2577 Current Is 3a) High Switching Frequency Of 400khz, The Ripple Is Smaller And Smaller . (lm2577 Frequency Only 50khz) Input Current: 4a(max) No-load 18ma (5v Input , 8v Output , No-load Is Less Than 18ma. Higher The Voltage , The Greater The Load Current ) Output Ripple:50mv ( The Higher The Voltage , The Greater The Current , The Greater The Ripple ) Load Regulation: 0. Voltage Regulation: 0. Operating Temperature:-40 - and85 Size: 48.1x24.9x14.0 Mm Weight: 17g Application: 1.car Regulato 2.solar Photovoltaic 3.wind Power And Other Applications Of Voltage Instability Color:photo Color Material:abs Package Contents: 2 X Buck Boost Converter Only The Above Package Content, Other Products Are Not Included. 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 Er Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.