Our WINE-STAT controller was first conceived and designed in the mid-’80’s, and included our unique bottle-probe temperature sensing concept, in order to monitor and maintain the actual temperature of the wine being stored. Placing the probe sealed inside a bottle provides a “surrogate” for a bottle of wine, and is the temperature reference for the WINE-STAT to operate the storage fridge. See our previous blog for the resulting wine temperature, held within about +/- 1/2 degree F.