my frient got ws-2080 with the standard shield and he made a stevenson box with standard dimenssions and he put the sensor with the standard shield inside the box as he told me the daytime temperature are reasonable but in the night he get warm readings except if he remove the standard shield and keep sensor without shielding inside the box i told him about the idea of weather1967 but he prefered to use factory standard inside stevenson box , could be this a standard shield problem or something else