Features Practical Use: Can also work as voltmeter, ammeter and power meter, an excellent replacement for multimeter with clear view and easy operation. USB Interface: The on board USB interface can easily charge your digital products. And the USB output voltage is the same as the module output voltage, not a fixed 5V output, please confirm before charging the USB device. Functionality: Can be used as an ordinary buck module with over current protection, a charger for various batteries, and a high power LED constant current drive module. 2 Work Modes: There are 2 modes, constant voltage and constant current, and an indicator light indicates which mode the module is currently in. Easy Setting: When used as a lithium battery charger, you can set the float voltage and charging current, and there is an indicator light to indicate whether it is charging or fully charged. Feature: 1. Safe Working: With current limiting protection function, the module will not be burnt out even if the output is short circuited. 2. High Accuracy: The on board voltmeter and ammeter can be self calibrated, and there will never be inaccurate problems. Specification: Item Type: Power Supply Buck Module Input Voltage: 5-36V Output Voltage: 1.25-32V continuously adjustable.  Output Current: Adjustable, maximum 5A (recommended to use within 4.5A).  Output Power: Maximum 75W (recommended to use within 50W, please reduce the power when under large voltage difference).  Working Temperature: -40-+85 degrees Working Frequency: 180KHz Conversion Efficiency: up to 96%.  Short Circuit Protection: Yes Over Temperature Protection: Yes (automatically shut down the output when over temperature).  Input Reverse Connection Protection: None (if necessary, please insert a high current diode in series with the input).  Installation Method: 4 x 3mm / 0.1in (approx.) screws.  Wiring Mode: Wiring terminal or welding terminal, V IN is input, V OUT is output.  Length: Approx. 68.2mm / 2.7in Width: Approx. 38.8mm / 1.5in Height: Approx. 15mm / 0.6in Package List: 1 x Power Supply Buck Module  4 x Screw ans Nut Set 1 x Heat Sink Package List 1 x Power Supply Buck Module 4 x Screw ans Nut Set 1 x Heat Sink