Description : Input voltage : 8 - 55V ; output voltage : 1 - 35V ; output current : 15A ( MAX ); please be careful not to exceed this range when regulating voltage . The actual output current is not fixed , and it is related to the input and output voltage difference , temperature and other conditions . Output power : good ventilation and natural heat dissipation power 100W for a long time , strengthen heat dissipation . The maximum can reach 200W , if you work for a long time , please leave the remaining amount to pay attention to temperature and heat dissipation . Working temperature : - 10 ~+ 85 degrees ; Operating frequency : 180KHz ; Conversion efficiency : High 94 % ( efficiency is related to input and output voltage difference , output current ). Short circuit protection : Yes ( short circuit output current is 0 ); Reverse connection protection : Yes ; Wiring method : High current terminal block , no soldering ; IN +: Input positive ; IN -: Input negative ; OUT +: Output positive ; OUT -: Output negative . Specification : Material : Electronic Component Size : 70x38x31mm / 2 . 76x1 . 50x1 . 22inch Package Includes : 1Piece DC - DC Adjustable High Efficiency High Power Module