54224Originally translated from english hi with one of these centers, look for them here Description:This module can lower applications is higher than the output voltage when the input voltage, such as battery, power transformer, DIY adjustable power supply, 24V power supply for vehicle notebook, industrial equipment, buck, 12V 3.3V, 12V 5V, 24V 5V, 24V 12V, 36V 24V, etc. Module name: 5A step-down module. Module property: Non-isolated buck module. Input Voltage: 4V-38V Output Voltage: 1.25V-36V (Adjustable)Output Current: 0A-5A, for safe working current, please below 4.5A. Output power: it is recommended to use W 75W, more than 50W please add heat sink. Operating Temperature:-40°-+85°Working Frequency: 180KHzTransfer Efficiency: 96%(max)Load Regulation Rate: S(I)le; 0.8%Voltage regulation ratio: S(U)le; 0.8%Power Indicator: YesShort Circuit Protection: (8A Current Limit)Over Temperature Protection: Yes (Automatic Shutdown Output Temperature)Short Circuit Protection: YesInput Reverse Connection Protection: No Reverse Output Protection: No PCB Size: 54x24x12mmQuantity: 1pcMeasured Table Performance:Package Included:DC/DC Converter Max. 5A x 1Heatsink x 1