ARDUINO M321 LM2596 DC-DC Adjustable Step Down Power Module with LED Voltmeter & USB Port Power Supply Electronic Hobby Kit

technical parameter: wide input voltage: 4.5-40V output voltage: 1.25-37V(Adjustable) with short circuit protection function: current limiting, since the recovery rectifier: non-synchronous rectification with led voltmeter, USB port, 2.54mm needle module properties: non-isolated step-down module (buck) output current: rated current 2A, 3A MAX(Heat-sink Needed), If you need its output power greater than 2A/10W, please add with heat-sink switching frequency: 150KHz conversion efficiency: Up to 92%(the higher the output voltage, the higher the efficiency) operating temperature: industrial grade(-40 to +85 degree celsius )(output power 10W or less) full load temperature rise: 40 voltage regulation: 2.5 percent dynamic response speed: 5% 200uS load regulation: 0.5 percent Size of the module: