Review on 🧊 Pack of 5 TEC1-12705 TEC Thermoelectric Cooler Heat Sink Cooling Peltier Plate Modules 40x40mm 12V 30W by Balthazar Cooper

Bought these to try and cool an outdoor camera and they work as advertised. My first impression was when I held it in my fingers and waited for a slight temperature change. Hooked it up to a 12 volt battery and had to throw it away almost immediately. It was only now that I realized that although my index finger was almost burned, my thumb was icy. I can understand why people say they will self-destruct if they don't have a way to dissipate heat, but c'mon - pumping heat from side to side is what they're supposed to be doing! I bought a small 40mm copper heatsink with a 12v fan built in and these things will run all day if you can get the cold out the other side. Amazing great technology and great product