Features 1. Adjustable DC to DC: Our WD5020 module is designed to provide a reliable and efficient solution for DIY power supply projects. With the ability to regulate voltage output, it can be used as a battery charger or constant current LED driver module. 2. LCD display for convenient monitoring: The DC-DC Voltage Converter module has dual displays of voltage and current for convenient monitoring. The LCD display provides clear and accurate readings, allowing you to easily track your power supply's performance. 3. Enhanced security features: We understand the importance of power module security. That's why our WD5020 module is equipped with overcurrent protection, short circuit protection and input reverse polarity protection. These features ensure safe and reliable operation and give you peace of mind. 4. High-quality construction and easy installation: Our DC to DC buck regulator is made of high-quality materials, ensuring durability and longevity. Its compact size of 3.94 x 2.36 x 1.89 inches makes it easy to install in any project. Whether you're a professional or a DIY enthusiast, our modules can meet your needs and exceed your expectations. 5. Wide range of output voltage and current: Our Adjustable Buck modules support multiple output voltage options, making them suitable for a variety of applications. In addition, the Voltage Converter also has large output current capabilities and a maximum conversion efficiency of up to 95%, ensuring optimal performance and power output. Specification: Item Type:Power Supply Module Model:WD5020 Input Voltage:7~50V Output Voltage:0~36V Continuous Adjustable(Can only be used as a step down module, the input must be greater than the output 1V or more) Output Current:Adjustable,20A Maximum Output Power: Up to 300W Working Temperature: -20~+75 ℃  Working Frequency: 300KHz Conversion efficiency: up to 95% Short Circuit Protection: Yes, constant current value currently set by constant current Input Reverse Connection Protection: Yes Output Backflow: No, please add a diode for charging! Wiring Method: Terminal block or soldering terminal, VIN is input, VOUT is output Size:100 x 60 x 48mm / 3.94 x 2.36 x 1.89in Package List: 1 x Module Note: 1.The output voltage cannot be adjusted because the default output voltage of the module is about 20V when it leaves the factory. When you encounter this problem, please rotate the CV potentiometer more than 10 times counterclockwise until the voltage value changes, and then use the module to adjust the voltage normally.2.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1 x Module