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Parameters：The material of this board is selected so that the quality can be guaranteed. *Input voltage:5-36V. *Output voltage:1.5-33V (0.5V step). *Output current:Rated current is 2A,maximum 3A(Additional heatsink is required). Conversion efficiency: Up to 92% (output voltage higher, the higher the efficiency). *Switching Frequency: 150KHz. Rectifier: Non-Synchronous Rectification. *Module Properties: Non-isolated step-down module (buck). *Short circuit protection: current limiting, since the recovery. *Operating temperature: Industrial grade (-40 to +85) (output power 10W or less). *Full load temperature rise: 40. *Load regulation: ± 0.5%. *Voltage regulation: ± 2.5%. Dynamic response speed: 5% 200uS. *Where the input setting DIP switches from top to bottom represent 0.5V 1V 2V 4V 8V 16V value, corresponding to the left to increase the value of the representative, appropriated to the right without, such as a state representative 3.5V: (Vx = 0.5 + 1 + 2 = 3.5V). Features：This buck module is with 6-position DIP switch which can adjust voltage by 0.5V every step and every switch has working indicator, and it is also with trimming potentiometer, users can set the voltage at the range of 1.5V-33V easily and quickly.Note:The trimming potentiometer has been adjusted, so users could turn DIP switch to set by 0.5V every step. If users adjusted the trimming potentiometer when they received it but they need 0.5V stepping value, at this time, users should adjust it back then it will work as normal.