Feature: *Onboard voltage, current, and power meters, you can easily use this module without a multimeter, which is simpler and more intuitive. *It has two modes: constant voltage and constant current, and there is an indicator light to indicate which mode the module is currently in; *When used as a lithium battery charger, the float voltage and charging current can be set, and there is an indicator light to indicate whether it is charging or fully charged; *With current limiting protection function, the module will not be burned out even if the output is short-circuited. *Onboard voltage and ammeter can be self-calibrated to avoid inaccurate voltmeter readings Specification: Part name:Step-down power module with shell Model: XY-HX Material: plastic Color: As shown in the picture Input voltage: 5-36V (Note! The digital display will be normal only when the input voltage is greater than 6.5V. If your input is 5V, please use a voltmeter to measure the output terminal to adjust the output voltage) Output voltage: 1.25-32V continuously adjustable Output current: adjustable, maximum 5A (recommended to use within 4.5A) Output power: maximum 75W (recommended to be used within 50W, please reduce the power when using a large voltage difference) Working temperature: -40~+85 degrees Working frequency: 180KHz Conversion efficiency: up to 96% Short circuit protection: Yes Over-temperature protection: Yes Input reverse polarity protection: None Installation method: 4 3mm screws Wiring method: wiring terminals or welding terminals, V-IN is input, V-OUT is output Module size: 68.2mm long, 38.8mm wide, 15mm high Weight: 73g Package Contents: 1*Step-down power module with shell Notes: Some customers reported that the output voltage of the module cannot be adjusted. When you encounter this problem, please rotate the CV potentiometer counterclockwise for more than 20 turns, and then use the module to adjust the voltage normally. Because when the module leaves the factory , the default output voltage is around 17V. 5A Cv Cc Step-Down Power Module Led Driver Lithium Battery Charging With Shell Made of high quality material, durable and practical to use. Perfect functions,give you a wonderful experience. Every customer can enjoy 30 days refund or replacement for Damaged/Quality Issues. If you have any questions, please feel free to contact us, we will solve it for you.