Product parameters: Input voltage: 6V-40V(Max. 40V) Output voltage: 3.3V, 5V, 9V, 12V, 24V, 2.5-26V adjustable Pressure difference: Input and output need to have a pressure difference of more than 0.7V Current output: 3A (Max), continuous current output 3A Power: 60W Static current: 1mA Conversion efficiency: up to 95% Frequency: 500KHZ low ripple frequency Protection: Output short-circuit protection Operating temperature: -40 to +85 Output indicator: Yes Size: 40*19mm; The thickness of the board is 12.5MM(potentiometer 14MM) and the diameter of the two screws is 3.1MM Module interface: IN+: Input DC positive 6V-40V(higher than 0.7V output). IN-: The input DC negative electrode is connected to the output negative electrode. OUT+: Outputs the positive DC terminal. OUT-: indicates that the output DC negative terminal is connected to the input negative terminal. Instructions for use: 1. The module size is very small, the heat dissipation area is limited, high-power output heating is a normal phenomenon, we use good materials, there is no need to worry about heating affecting the life. 2. The voltage difference between input and output needs to be more than 0.7V to achieve voltage reduction. Package included: 1pc x DC6-40V to 3.3V/5V/9V/12V/24V DC-DC Buck Converter Adjustable Step Down Power Supply Module Stabilized Power Supply Module 3A