DROK DC Buck Converter Adjustable Voltage Regulator 12V 6V-32V to 1.5-32V 5A, LCD Screen Step Down Converter with USB Port and Protective Case

Excellent stepdown. I was looking for a unit to lower the voltage(speed) of a brushless 24 volt fan and this worked perfectly. I was able to slow the fan down to 12 volts and lower the noise from the fan. I looked for awhile and this unit is excellent for lowering the voltage (speed) of a 24 Volt DC fan. I highly recommend it.

I bought one of these to step down 24V to 12V for cooling fans on my 3D printer. So far, this little buck converter has been virtually flawless. It's easy to connect wiring, adjusting the voltage was a snap, and it looks pretty great, to boot!Pros:• Easy connections with screw-down clamp terminals• Easy to adjust outgoing voltage• Display can be adjusted to show incoming voltage, outgoing voltage, or both. And even amperage.• Looks fantastic. I love the clear, open "housing".• Includes small stick-on heatsink to keep things running coolly.• Everything fit together perfectly• Has a USB power output, in case you need to run USB devices from other power sources. (Likely need to reduce output to 5V.) This output can also be disabled.• Even has a spot to mount a small cooling fan to the clear acrylic over the heatsink.Cons:• No assembly instructions, though it's not overly complicated. (Hint: Look at the product photo for help.)• Voltage is off slightly, so I wouldn't call it overly-precise. Display says 12.0V out, and I measured 11.67V out. Good enough for my purposes.• Open housing can let in dust and debris, if that's a concern.• Included double-sided adhesive really doesn't stick all that well.Overall, the cons are pretty minimal for me. I'm really happy with this thing. We'll see how it does with longevity, but for right now it's been working great.

The directions that come with it are virtually crap. Your best bet is to find a video like i did (unless you know and understand electrical operations, which i didn't).The wiring was very easy, but you need to build the housing, and hat ended up being the first nightmare as the directions were not helpful.The second, make sure you have a very, very, tiny flat head screw driver. As I even struggled with the YouTube video (a tiny bit), I decided to say "F" it and just start turning the screws. The left is the volts, and the right, as far I can tell is for... I dint remember. I just know I turned that one around 30 times before it did anything.That said, it works great. I'm running an old laptop power supply to my HO train set. As it is putting out 19 volts, I had to get it down between 12v and 14v continuous power. It works perfect for that. I'd buy it again.

I installed it in the same box as a low voltage motor controller for my DC ceiling fan. If the terminal connections were more substantial I would give it five stars. 16 gauge wire seems max, and that was tight. Easy to adjust and it's been working well. I like it.

I've bought multiple of these for various projects, but primarily for stepping the power output from my solar/battery powered security cameras from 24v to 5v. They've been working flawlessly for 2 years with zero maintenance or adjustment required.However while replacing my generic analog thermostat with a smart one recently, I found I didn't have the 24v line required to power the new digital controller. What I had was a 5v wall charger and one of these adapters. I removed the circuit board from the wall adapter and mounted it inside the same box this converter comes in. It barely fit but it fit! I tapped power from the 120v line from the A/C unit into the 5v transformer, then patched the 5v output to the input on this converter, set the output to 24v and it's also been working fine for over a year. While I realize that I could have just bought the 24v adapter, I wanted to finish the project before the weekend was over and this got me there. It's still working so I see no need to swap it out.

Junk. Broke almost immediately. Fried my Arduino too. I made sure to regulate it to 5V logic supply but it changed and went up to 9V. It began to flicker and the over current light kept going on and off.

Easy to use and put together.Used a few on some nerf guns

well, the output does adjust the shorted current is 2.5a. you cannot have 2 outputs, different, the usb reflects what it is set at, if you put it at 12v, the usb will not turn on until you make it 5 and also it will not power up a RPI. I was buying this thinking I could use 12v out AND 5v usb but I made an error. other than that its OK for the $$. it'll charge a usb device with current limit so that's OK too. just an FYI