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Your cart is empty. 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
Jim
2025-08-27 10:13:28
This buck converter works as expected with a nice voltage meter as a bonus.The instruction is not details enough causing some people to get confused thinking it does not work. As shipped, the output voltage is set very high so it looks like it doesn't regulate at all since as you increase the input, the output would go up accordingly. You must adjust the output voltage by turning the blue set screw at the top. Keep turning the screw counterclockwise until the output voltage is lowered to your desired level.The other confusing part is the voltage meter, as shipped it was very accurate for me, but you could calibrate it manually by long pressing the right button until the display is flashing, then use the right button to add and the left button to subtract, then long press the right button again to save the calibration. The voltage meter and the two buttons do not effect/control the actual out put voltage at all; some people seem to think that they do control the output voltage.
The meyer family
2025-07-30 13:56:18
These are fantastic, I only wish they came with some sort of cheap housing, but most people don't use a shield or housing. They work good, but you need to understand the limits, these are good if you intended output( the device you want to power) is not over 2A of peak or current load, these are good for like, LED's maybe a couple of 12-24 pc fans, but you should not use this for high amperage conditions, this board is not build for it, if you need high power your better off getting a specific PSU like a small meanwell power supply which are usually built for higher power draw. Overall these are fantastic as most don't have a display which this does and you can switch it from input voltage to output voltage so you can dial the output voltage without a multimeter (however if you do have a multimeter which if your doing anything involving a buck converter you should, you can also correct the display voltage on the screen if for say its off by 1 volt or 0.1 volt compared to your multimeter, you can edit the display to correct for the error in voltage and then make it display the true voltage, you should do this the second you get it, but you don't have to as mine was only off by 0.1 volts which is good enough for any application I would need.
Sk1lZz
2025-06-30 10:02:03
This little guy does pretty much what it’s supposed to. It’s not real exciting. It can handle voltage higher than it’s rated and can reduce voltage down an impressive amount. It’s compact and well made. Voltage hold is steady. Overall better than most out there but don’t expect a lot more than that.The adjustment method can be a bit frustrating and it won’t drop 48 volts to 12 or lower, you will get around a 20 volt drop and if you go lower it automatically resets to where you started. The connections are pretty small and the display will fail if you make any mistakes. Again it’s probably one of the best for what it is.
Karl Lindheimer
2025-05-28 18:05:14
I use these in so many different applications when I need an adjustable voltage source. Accurate display, switchable between input volts and the adjustable output. Keeps a well-regulated voltage on output.
Glendon Richardson
2025-05-27 12:56:39
Prompt delivery, product exactly as described. Will use this vender again.
Kevin Ciccone
2025-05-24 10:30:03
Very disappointed, these DO NOT WORK at all!!I'm rigging up a custom soundboard in my son's power wheels and need to drop from 24V to 5V. I did a bunch of research, and although I'm always leary of the poor quality Chinese products on Amazon, I took a shot with these because they seemed to fit exactly what I needed. The input range could handle my (up to) 26 volts coming in, and could put out down to as little as 1.5V. They even had a built in digital readout to save me the step of putting a separate in-line gauge in.I got the first one wired up and flipped on my 24V to test it. On start up it shows voltage in on the display, and it read 26V which was accurate for the fully charged 24V battery. I switched the display to show the output and it showed 20.1V. I then started lowering the output setting to the 5V I needed, but once I got to 7.4V it looped back around to 34V. This was disappointing because it wouldn't work for what I need, but it gets worse. I decided to verify the output with my multimeter, and although it was set to 7.4V, the output was still 20.1V. I tried turning the power back on and off, and changing the display back and forth, but the actual output would not change from the 20.1V. At this point I was pretty sure I bought junk, bur for the hell of it, I decided the wire up the second one to see if maybe I just got a defective unit, but the second gave the same results. This time when powered up it showed 18.7V and would only adjust down to 5.9V, but the actual output wouldn't change from 18.7V.So, not only were these not able to reach the low outputs advertised, there not even adjustable at all. Needless to say these are getting returned. Hopefully I can find something that actually works.
M. Heer
2025-04-25 19:38:56
Great product, works as advertised! Adjustable DC voltage output is very stable, range of input voltages very helpful... Use them all over...
Cynthia M
2025-02-09 16:18:10
Installed this to step down the voltage from 24V to 12V to run a 12V fan from a 24V power supply.I 3D printed a case for this, and installed the board in that case..For future, I'm not sure I'd go with this one again because the terminals they give you for the wires are a pain in the rear.Not only do they not open very much to get a wire into them, they also didn't clamp on a smaller gauge wire very well. You also have to have just the right screwdriver to get enough torque on the screw head to tight them down. - Terrible connector.If that connector was better, I would have given this device 5 stars.The voltage display is accurate and you can display input or output voltage or just turn the display off.It was easy to adjust the output to 12V.Just a pain to physically attach the wires to the thing.
ToxicFrazzles
2025-02-08 13:08:45
Extremely useful for embedded control systems for robotics because you get a stable voltage it is easy to use and it is very efficient
Richard
2025-01-17 19:45:54
Am ordering 2 more, very happy.
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