Parameters: Input voltage is DC 4V - 40V, output voltage is DC 1.25V - 37V, continuously adjustable, with a max output current of 3A. High Precision: Comprises a 36u thickened PCB, high-Q inductor, and premium solid-state capacitors for effective high-frequency noise filtering, along with an output LED indicator, suitable for diverse electronic projects. LED Display: Features a voltage display with ±0.05V accuracy within 0 - 40V range. Note: Input voltage above 4V for accurate display. DIY Friendly: Connect to power, adjust the blue potentiometer screw with a mini screwdriver to vary output voltage, monitor with multimeter. Clockwise for voltage increase, counterclockwise for decrease. (Factory default is high voltage; ~7 - 15 turns needed for voltage drop, 1 turn = +/- 1V) Applications: Applicable where input voltage exceeds buck output, like batteries, power transformers, DIY adjustable power supplies, and useful in numerous electronic projects.
LM2596 Buck Step-down Power Converter Module 4.0-40V to 1.25-37V LED Voltmeter

1.Adjustable output voltage range of 1.25V ~ 37V continuously adjustable (1.5V input voltage must be higher than the output voltage).

2.Maximum output current up to 3A, normal and stable operating current of 2A With a voltage meter display, the use of advanced microprocessors, range 0 ~ 40V. (Note: To ensure accuracy voltmeter, please ensure that the input voltage is 4V above)

3.With power indicator light

4.Tap the right button to switch the input or output voltage measurements and has a light display which is being measured voltages, and save the settings, even then boot off

5.Voltmeter can be turned off when not needed can easily touch the left button

6.With terminals, no soldering iron can also be easy to use, and retention wire connection points

7.Using the internal oscillator frequency 150KHz, belongs to the second generation of switching voltage regulator, power consumption, high efficiency.

8.With overheat protection and short circuit protection