... -Peltier--Thermoelectric Cooler Air to AirFeatures:1, Using semiconductor electronic cooling, small volume, light weight.2, No compressor, no Freon, ... , no leak.3, Using no pollution material, compliance RoHS4, Free mounting, applicable to a variety of places.5, Working ambient ... sink.FF means:Hot side and Cold side both use fan cooling catalogue1.FF-36W-Thermoelelctric cooler air to airFF-36W-12C ...