DC 12V DIY Thermoelectric Peltier Refrigeration Cooling System Kit Semiconductor Cooler Heat Sink,2 Cooling Fans, 2 Large Fans and 2 Cold Junction modules

The cooler is well built, and I bought it to play with and see if I could add it to my mini fridge when I was done. You must remember that you will need a 5 amp power supply and a temperature control module. I had it running stand alone in open air for hours turning on and off. I could not add it to my mini frig, but I still have it around for another project.

The peltier works well. You can feel how cold the small heat sink gets. The large heat sink heats up pretty quickly so make sure that the large (computer fan) is always running when the peltier junction is connected to current.The only thing that needed to be adjusted was that the small fan rubs against the small heat sink and does not turn. The fan needs to be offset from the heat sink.This is not a problem in my application since I will replace the fan with another fan or larger heat exchanger

It's working properly, you just need to add a temp control or for replacement. Capacity cooling is equal to 1 feet.

Ot was not quite the system I was expecting. No instructions or specs of any kind.

First off it came damaged because it was simple shipped wrapped up in a little bubble wrap inside a shipping bag. I thought the bent fins were something I could fix well enough for my project. I wired it up and tested it. Unfortunately I didn’t test it long enough as it would have saved me a few hours of work. It only was able to cool the heat sink 10° cooler then ambient after 4 hours. Figured I would at lest be able use components on future projects. I took the whole thing apart and seen they used very little thermal paste on 1706 peltier. The big heat sink is so curved in the back ‘flat’ side they had to mill 2 spots to put the chip on. Guess I should have known by going the cheap route what I was getting into. Better off building my own with quality parts. More expensive but at lest I know it will work as intended.

I haven't actually gotten to use it but it looks like it'll work fine lol

Bent heat sink, screws half installed, burrs & sharp edges, and no documentation.

I hooked this up, and it lasted for about 30 minutes. I went to replace the peltier unit inside, and found a 4.8 volt sp1848. 27145 in it. I put a 12 volt unit in it and now works good.