I change the cooling of this, work better after words. this is very basic, so might need to dyi some other stuff into it to make it better.

It worked and the cold side got cold. I dont know quite what im going to use it for yet but the product works amazing and I cant wait to use it in a project.

While I don't know what I might do with Semiconductor Refrigeration Cooling System Cold Plate, it's pretty cool. It works just as expected. I had to buy a 12v 240w power supply to make it work. Looking at the second picture you can easily see the cold spot at the upper left quadrant of the cooling plate. I didn't wire up all 4 quadrants yet. What serendipitous encounter can have with this high technology? This would be a great STEM learning tool.

Looking at this from just the pictures does not do this device enough justice.
AT first glance even in the listing, it just looks like a hunk of aluminum slapped together with a couple of CPU fans, and some wires hanging out the sides. At first, glance, unless you know anything about system cooling technology you're going to pass this off as a pile of random parts thrown together by some crazy mad scientist looking for a quick buck.

But this; this is where you would be completely wrong. I know I was.

You see... the technology in this surprising device is actually fairly new in this application, and surprisingly more advanced than people realize. This technology needs VERY LITTLE energy to run and operates on a level that might as well seem like complete magic.

Thermoelectric coolers (also called "Peltier coolers"). Use a special material that is temperature sensitive. It takes in a set electric current value (usually as low as 5 Volts, depending on size, and then runs it through a series of special semiconductors. When a voltage is applied across joined conductors, it creates an electric current that displaces heat from one side of the plate and causes a temperature polarity shift. In short, as more electricity is applied, When the current flows through the junctions of the two conductors, heat is removed on one side, causing intense cooling. The Heat is then deposited at the other junction (plate). Creating a thin double-sided "AC unit". One side will be very hot, the other side will be very cold. An approximately maximum temperature difference of about 70* C (158* F), (Based on ambient temperatures and voltage applied). So in short, one side will be roughly at the maximum temperature of +75* F above ambient temperature in the room, while the other side will be roughly -75* F below room temperature.

How this works - (Technobable):
Thermoelectric coolers act as a solid-state heat pump.
Each features an array of alternating n- and p- type semiconductors. The semiconductors of different types have complementary Peltier coefficients. The array of elements is soldered between two ceramic plates, electrically in series and thermally in parallel. The "Aluminum plates" attached to each side function as a heat/ cold displacement.

From there, Solid solutions of bismuth telluride, antimony telluride, and bismuth selenide are the preferred materials for causing the Peltier effect, in devices like this, because they provide the best performance from 180 to 400 K and can be made both n-type and p-type. The cooling effect of any unit using thermoelectric coolers is proportional to the number of coolers used, and the total amount of voltage applied. Typically multiple thermoelectric coolers are connected side by side and then placed between two metal Aluminum or temperature-sensitive plates.

Because of this; Cooling occurs when a current passes through one or more pairs of elements from n- to p-type; there is a decrease in temperature at the junction ("cold side"), resulting in the absorption of heat from the environment. The heat is carried along the elements by electron transport and released on the opposite ("hot") side as the electrons move from a high- to a low-energy state.

The Peltier heat absorption is given by Q = P (Peltier Coefficient) I (current) t (time). A single-stage thermoelectric cooler can produce a maximum temperature difference of about 70* C (158* F).

Uses:
Because of this, this device has a WIDE range of applications. Benchmark testing, laptop cooling, Server cooling, or even for those avid DIYers - low-cost, high-powered AC units. When you really think about you could even make your own Refrigerator with one of these.

The applications are endless.

The cost for this is truly inexpensive when you consider the applications and use. This is a marvelous piece of technology, for a very surprising cost.

great review by tokeimi... very technical, never understood this prior...
the unit does what it advertised, it is a great cooler, like a cool plate
it really is quite the cocntraption, but if your goal is to keep electronics cooll, this product does the job for me. I put my lap top on it, when its driving dual displays, which really makes the graphics board HOT.... this is better than fans only.... so for my needs, its impressive....but I have no experience with competitive products....