Features: MP1584EN DC-DC 3A power step-down module Ultra-small Size: approx 22mmx17mmx4mm/0.87x0.67x0.16in The input voltage is 4.5-28V, the output voltage is 0.8-20V. MP1584EN DC-DC 3A adjustable step-down module. Adjust the potentiometer knob: clockwise to adjust the output voltage is reduced; counter-clockwise, the output voltage is increased; Specifications: Input Voltage:4.5-28V Output Voltage :0.8-20V 3A(Max-) Output Current:3A Conversion Efficiency:92% the highest Switching Frequency: 1.5Mhz Size:approx 22mmx17mmx4mm/0.87x0.67x0.16in (Ultra-small) Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-3mm measuring deviation due to manual measurement. Package includes: 1PC DC-DC Step Down Supply Module