Features: 1. Employed high-brightness and high-definition LCD screen, which can display voltage and current simutaneoisly. 2. Press button to adjust voltage, the left is voltage reduction, the right is increase. Can withstand 100,000 times of pressing. 3. More convenient and quicker than other. Product parameters: Input voltage: 5-23V, please keep the margin, it is recommended to use within 20V. Output voltage: 0V-16.5V continuously adjustable, automatically save the last set voltage the input voltage must be higher than the output voltage by more than 1V. Output current: ZUI is 3A, it is recommended to use in 2A. Input anti-reverse: Yes Short circuit protection: none do not use short circuit Accuracy: 1, three-digit display, current unit is A. Conversion efficiency: up to 95 efficiency is related to input, output voltage, current, voltage difference. Load regulation S I 0.8, voltage regulation S u 0.8 Size: 62mm*44mm*18mm Weight: 45g Package List: 1 x module