Input voltage: 4.5~45V<br>Input power: 2A， 12V to 5V 3A (max.)， 15W<br>Input mode: IN+ input plus， IN- input minus<br>Output mode: OUT+ output plus， OUT- output minus<br>Continuous adjustable<br>Conversion efficiency: the highest 92 percent (the higher output voltage， the higher efficiency)<br>The regulated power supply， only connect the input port of the module to the car cigarette lighter for power supply， it can adjust potentiometer， the output voltage can be 4.5V~45V， allows your adjustment (because it is step-down module， the output voltage is 1.5V or above lower than that of input)<br>Suitable for mobile phone， MP3， MP4， PSP charging and many other equipment supply<br>Adjust way: first right after the input power supply (4.5~45V) and using a multimeter to monitoring output voltage and adjustable potentiometer (usually on time turn booster， inverse time turn decompression)， output voltage (3~35 V)