The working state of the cooling fin is that one side is cooling and the other is give out heat.
When working, the give out heat surface must be well dissipated. It is strictly forbidden to power on for more than 2 seconds without cooling.
The literal is cooling noodles, and the non-literal is give out heat noodles.
Please note: this refrigeration piece has high power and is suitable for water dispensers. Do not purchase it for car refrigerators.