Description: Thermoelectric coolers (TEC or Peltier) create a temperature differential on each side. One side gets hot and the other side gets cool. Therefore, they can be used to either warm something up or cool something down, depending on which side you use. You can also take advantage of a temperature differential to generate electricity. The thermal tape listed below works very well to attach heat sinks to the hot side.
This Peltier works very well as long as you remove the heat from the hot side. After turning on the device, the hot side will heat quickly, the cold side will cool quickly. If you do not remove the heat from the hot side (with a heat sink or other device), the Peltier will quickly reach stasis and do nothing. We recommend using an old computer CPU heatsink or other block of metal to pull heat from the hot side. We were able to use a computer power supply and CPU heatsink to make the cold side so uncomfortable we could not hold our finger to it.
Based on 2 ratings:
…but it came with no brand name, no manual, no specs, no instructions, nothing… And also found after ordering these there are cheaper yet equal or better quality tecs elsewhere. But they are well made and work great. Finally blew one after heating to over 430 degrees Fahrenheit fyi
Hi, To save on wasted materials, we generally do not ship printed material with our product. We do still share as much pertinent information as possible on the product pages.
I have to agree with the some of the previous reviewers comments on this device, those being that it is well made and works great.
The way I tested for the cold and hot sides was by connecting a 1.5 volt AA battery, positive to red and negative to black and holding the wires in place for 5~10 seconds. Even at that low voltage and current I was able to easily figure out what side was what.
After, I mounted an old CPU cooler with fan to the hot side using the “Theragrip Thermal Tape” sold here and all is well with it cooling my laser diodes since I bought it a few weeks ago.