Description: Good Display Screen: The display screen adopts high-brightness and high-definition LCD screen, which can display voltage and current. Adjusting Function: The module comes with a adjusting function, so you don't have to worry about inaccurate measurement display. Good Quality: Ordinary digital tube will be bad after a period of time, this product does not have such problems. Unique Feature: The unique feature of this product is that the voltage can be adjusted by pressing the button, the left is the voltage reduction, the right is the voltage increase. Very Convenient: It can automatically save the last set voltage, which is very convenient to use. Specification: Color: As Shown Material: Metal Size: Approx. 6.2x4.4x1.8cm/2.4x1.7x0.7inch Input Voltage: 5-23v (recommended within 20v) Output Voltage: 0v-16.5v Output Current: 3a, Recommended for Use within 2a Input Anti-connection: Yes Short Circuit for Protection: None Accuracy: 1% Conversion Efficiency: Up to 95% Load Regulation S(i)≤0.8%, Voltage Regulation S(u)≤0.8% Note: There might be a few color distortions due to different computer resolutions. There might be a slight error due to different hand measurements. Package Includes: 1 Piece Power Supply Module.