Part number:1 Item Package Quantity:1 Connection Method:1.IN+:input positive2.IN-:Input negative pole3.OUT+:output positive4.OUT-:output negative poleInstructions:1.Connect the cable between the module and the power supply first,and then turn on the power.(If the input terminal is live and wired,it is easy to spark,especially when the input power supply voltage is high,it will even burn the pads of the module).2.For the first use,you need to connect to a power supply of more than 30V,and use a multimeter or a voltmeter to measure whether the output voltage of the module is consistent with the voltage required by the device.3.The electrical equipment (load) is connected to the output end of the module.4.When the difference between the input voltage and the output voltage is less than 5V,the output will be unstable or no output will occur.5.Try to leave some margin when using,input the battery to consider the highest voltage value when the battery is fully charged.Specifications:Input Voltage:DC 12V-120VOutput Voltage:DC 1.5V-48VInput and Output Voltage Difference:5V (guarantee that the output voltage is 5V smaller than the input voltage during use)Output Current:1.5A (Max)Switching Frequency:110KHzPositioning Hole:2mmWork Temperature:-40~85Work Humidity:5%~95%RHSize:44*20*14mmPackage List:1 X DC-DC Step-Down Module It is a DC-DC step-down module.Step-down module input DC 12V-120V voltage,output DC 1.25V-48V voltage. The buck module supports built-in over temperature,over current and output short circuit protection. It has a potentiometer,which can adjust the output voltage of the power module. The voltage converter supports wide voltage input,the input voltage range is DC 12V-120V. The step-down power supply module has a positioning hole,which can be fixed in a convenient place according to your own needs. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied. It is a DC-DC step-down module.Step-down module input DC 12V-120V voltage,output DC 1.25V-48V voltage. The buck module supports built-in over temperature,over current and output short circuit protection. It has a potentiometer,which can adjust the output voltage of the power module. The voltage converter supports wide voltage input,the input voltage range is DC 12V-120V. The step-down power supply module has a positioning hole,which can be fixed in a convenient place according to your own needs. SHOP WITH CONFIDENCE: To provide you with the highest quality service, If you have any question, please feel free to contact us.We will provide after-sales service until you are satisfied.