1. Crystal shell, beautiful and generous design, good Press texture of the buttons, set the output voltage of the buttons, eliminating the trouble of using a knife; 2. The button can control the output to be turned off and on, and the power-on default can be set to ON or OFF; 3. LCD can display input and output voltage, output current and output power; 4. The input terminal is protected against reverse connection, and the reverse connection will not burn; 5. High efficiency above 93%, high current, low heat, constant current value adjustable around 0-4.5A, suitable for office power supply, high-power LED constant current drive, lithium battery storage battery charging, etc.! Input voltage: 6.5-36V (input voltage is lower than 6.5V, current accuracy is not accurate, and LCD display is abnormal when lower than 5.5V) Output voltage: 1.2-32V, the factory default output is 5V. Step-down type, the output voltage can only be lower than the input voltage, the minimum voltage difference is 2V Output current: It can work stably at 3.5A for a long time, and it can reach about 4.5A with fan to strengthen heat dissipation (adjustable limit current is about 4.2-4.5A) Output power: natural heat dissipation 50W (within 3.5A), plus a fan to enhance heat dissipation 75W Voltage display: resolution 0.05V, range 1.2-32V, approximate resolution accuracy is about 0.1V (for customers with demanding accuracy, be careful!) Current display: resolution 0.005A, range 0-4.5A, approximate resolution accuracy is about 0.05A (Careful for customers with demanding accuracy!) Conversion efficiency: about 94%, depending on the pressure difference and current efficiency Working current: about 30mA Input reverse connection protection: Yes Weight: 65g size:70.5 x 48.4 x 28mm Material:Metal + PCB colour:blue Package Contents: 1 x Module Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.