I have placed the thermometer below the kitchen window. After about 3 months of operation it works with the first battery well. However, a comparison of the temperature indicated by a calibrated mercury thermometer brings to light the systemic weakness of this thermometer. The lower the temperature, the greater is the deviation, because the display, respectively. the measuring system is influenced by the jet heat the kitchen window. When displaying -5 ° C the effective outside temperature is around -7 ° C, at temperatures above 10 ° C, the display is in good agreement with the actual outdoor temperature. BK
