Review on Keep Your Electronics Cool And Dry With The Coolerguys 7" (172Mm X 152Mm X 51Mm) 12V Waterproof Fan by Charles Phillips

There is no sensor wire as shown-three pin connector but only two conductors. Fits 3 pin JST SM connector, but says warranty void if you cut it off; so must get a matching connector or use Duponts to DIY. Metal (aluminum) frame, plastic blades. Bench tested to draw 0.35A. Very quiet, so moves only a moderate amount of air given the size. Exhausts to label side. Coolerguys is a known brand so should go the distance. 3-year warranty, competitively priced.