Product review (1 stars): Waste of time
Was experimenting on a small thermo cooler.  Bought this and heat sinks.  When it arrived I plugged it in and had a difficult time deciphering the hot from the cool side with a few seconds power on - not a good sign .  After putting heat sinks on both sides and mounting in a cooler hole with fans on it, I fired it up.  It ran for a few minutes, started to work (got hot and cold), then died within 10 minutes.  I don't like leaving bad reviews, one of the few bad products I have received, and this was under $10.  But not worth my time...