Sell Dual Display DC-DC 5-23V To 0-16.5V 3A Max Step Down Module Power Supply Buck Converter Adjustable LCD Step-down Voltage Regulator best price

Adjustable buck regulated power supply module 3A LCD display voltage and current meter dual display DC parameter: 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 larger, it is recommended to use within 2A. If the heat is large, please solve the heat dissipation problem by yourself. Input anti-reverse connection: yes Short circuit protection: none (do not use for short circuit) Accuracy: 1%, three-digit display, current unit is A. Conversion efficiency: up to 95% (efficiency is related to input, output voltage, current, and differential pressure). Load adjustment rate S (I) ≤ 0.8%, voltage adjustment rate S (u) ≤ 0.8% Size 62mm * 44mm * 18mm If it is used for charging, after charging, please disconnect the battery terminal first, then disconnect the input terminal to prevent the battery from flowing back and damaging the module! Or add a backflow prevention diode at the output, thank you! Note: For questions about the use of the product, please read our introduction carefully first, and leave us a message if you do n’t understand. Before the baby is sent out, the technician will test it before powering on! After receiving the baby, please understand the wiring method, then power on the test and then solder, because the wrong wiring, wrong operation or DIY changes are not guaranteed! Calibration instructions: The module has a calibration function, don't worry about the problem of inaccurate measurement display. If you find that the display is inaccurate or the display value is stuck, and the left and right buttons cannot adjust the voltage, you can use the following method to calibrate. After receiving the baby, it is recommended to perform a calibration according to the following method! Calibration method: When power is off, press and hold the left button to connect to the power supply, the display begins to flash, release the left button, use a multimeter to measure the output voltage, press the left and right keys to adjust the multimeter to display when the ZUI is near 5V, such as 4.98 to 5.02 will do. The LCD screen of the adjustable power supply shows how much can be left unchecked. After adjusting, turn off the power supply, then connect the power supply, and the calibration is completed. The error can be calibrated within 0.04V, if the error is greater, you can try to calibrate again.