1. High input voltage; Stable voltage output2. Support over temperature protection; Support overvoltage protection3. Support short circuit protection; Low power consumption4. Support constant voltage constant current output; Support charging function5. With heat sink and keep good heat dissipation.Parameters:1.Product Name:DC Power Supply Module2.Working Voltage:DC9-120V (Keep input is at least 4.0V high than output)3.Output Voltage:DC5V, 12V4.Output Current:3A5.Output Power:5V-15W, 12V-36W6.Conversion efficiency:About 96%(The smaller the differential voltage, the higher the efficiency)7.Working frequency:140KHz8.Soft Starter:Yes(Failure at high power load)9.Over temperature protection:Yes10.Overvoltage protection:Yes11.Short circuit protection:Yes12.Working Temperature range:-40~8513.Working Humidity range:0%-95%RH14.Size:42 x 30 x 17mm/42 x 30 x 20mmUsing Steps:1.Connect right input voltage at input terminal.2.Turn ON power supply.3.Check output voltage by voltmeter and ammeter.4.Connect load.Note:1.It is a power supply module,So please keep input is at least 4.0V high than output.2.Input and output are Non-isolated, safe and reliable.Application:1.Ordinary power supply2.Battery charger3.LED drive power4.Power conversioncolor:As shownMaterial:PC+MetalPackage Contents:1 x DC-DC Buck Converter Module(DC9-120V 5V 3A)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.