3 Sets TEC1-12706 Peltier Cooler Module kit | 6A 12V Cooling panel + Aluminum Heat Sinks + 12V Cooling Fan

I accidentally left a poor 2-star review because I thought there were only two heat sinks in the box instead of three, which I needed. It turns out that if you lift one of the heat sinks, you’ll find another nested inside to save space. I apologize for any trouble my mistaken review may have caused.

Great teaching set for my 9yo twins as it has everything you need to demonstrate the thermoelectric effect as long you have standard teaching tools for science and engineering. For teaching here’s what else you need/want to demonstrate full functionality: A 12 or 24 volt DC power source (ex: car battery) A contactless thermometer A multimeter A dual-probe thermometer that can simultaneously measure, chart, and display two temperatures Something fun to heat or cool, we did my kids water bottles and my coffee cup to show how you can heat and cool at once A hot and cold source (ice water and coffee as above) to show this running “backwards” and generating electricity.

The heat sink and fan included with the kit are insufficient to cool the Peltier device at the rated 12VDC / 6ADC conditions. The included fan mounting hardware does not mount to the heat sink. There is no provision to mount the fan to the heat sink. While the fans are very quiet, they do not provide adequate cooling of the heat sink.

seems pretty good for my needs but when i applied voltage to the cooling device it felt cold for a moment then got very hot

Excellent kit for getting started with peltier thermoelectric modules. Aside from a power source and thermal paste, this is all you would need to get started. I have run as little as 3.7v through a plate and fan combo with rapid results.