5A 75W XL4015 DC-DC Converter Adjustable Step-Down Module 4.0-38V to 1.25V-36V DIY Power Supply Compatible with Arduino Raspberry Pi DIY Etc

Have used two of them now. One long term and both powering Raspberry pie units. Draw from 1-3A and these have not missed a beat. Did find with both I had to wind the adjuster many times one direction before th voltage started to adjust but only have to do this the first time. Added a small fan when pulling a fairly constant 3A at 5v down from 12v as it warmed up enough I didn’t want to get any fluctuations

First, minus one star for the screws and optional heat sink (included) rattling round in the same packaging, would have been easy to damage the circuit in transit. The voltage adjustment micro screw takes a lot of turns to make any difference, but when it did, it worked well. The input/output digital readout is quite accurate and a handy feature. Works well. Nice compact size. Would recommend.

Perfect for the price. Accurate enough and maintains output very well. Heats ink and standoffs are loose in with the board which isn't ideal, but no damage was caused and for the price it's a bargain. Recommended.

Very easy to use, small enough. Does what it's supposed to. Using it to step down voltage to a 12 volt cooling fan in a 24 volt PSU, does the job without fail.

This is not a voltage converter but a living example of bad packaging. The converter and several loose and sharp edged items (heat sink, brass spacers and nuts) where all packaged in the same small plastic bag that itself looked as if it had an encounter with a steam roller (see picture). The circuit board had scratches and one of the buttons was ripped of the board.

I bought this to convert 24v to 12v for a fan for my 3D printer and this worked as expected 1st time and was very easy to install and setup.

Nice display and easy adjustment, it even has a calibration mode for the input voltage. Testing shows it to be remarkably accurate given the cost. I’ve dropped one star though because as others have said the screws and heat sink are left to roll around in the bag which could easily cause damage in transit to the PCB. Happily this was not the case for us though. Overall therefore I’m delighted with it.

Although I haven't found any damaged, so, far, the metal fittings are not separately wrapped from the circuit board. The heat sink is too big and touches other components. I used some aluminium shears to cut 1 rib off. It now (sort of) fits. I use it to drop 12v DC to 5v DC at about half it's rated capacity of 5A. After buying 10 as a test, I have ordered another 40.