Features: 1. Crystal case and compact appearance, good touch on the button. 2. Press the button to control the output to turn off, and you can set the power-on default to ON or OFF. 3. LCD screen can display input and output voltage, output current output power. 4. Input end anti-reverse protection, reverse connection will not burn 5. High efficiency of 93% or more, high current, low heat generation, output voltage 1.2-32V can be adjusted freely, constant current value is adjusted from 0-4.5A 6. Suitable for office power supply, high power LED constant current drive, lithium battery battery charge, etc. Specification: Condition: 100% Brand New Input Voltage: 6.5-36V (input voltage is lower than 6.5V, current accuracy is not accurate, LCD display below 5.5V is not normal) Output Voltage: 1.2-32V , factory default output 5V. Output Current: It can work stably for 3.5A for a long time, and can reach 4.5A with enhanced heat dissipation (adjustable current limit is about 4.2-4.5A) Output Power: natural heat dissipation 50W (within 3.5A), enhanced heat dissipation 75W Voltage Display: resolution 0.05V, range 1.2-32V, accuracy ±0.1V Current Display: resolution 0.005A, range 0-4.5A, accuracy ±0.05A Conversion Efficiency: about 94% Working Current: about 30mA Input Reverse Connection Protection: Yes Output End Anti-backflow: No Short Circuit Protection: Yes Weight: Approx. 66g / 2.3oz Size: Approx. 70.5 * 48.4 * 28mm / 2.8 * 1.9 * 1.1in Package List: 1 * Step-down Module Note: 1. Module input IN-disabled and output OUT-shorted, otherwise the constant current function will be invalid. 2. Please ensure that the power of the power supply is greater than the power required by the output load. When the module is hot, please reduce the power usage