Last time I changed batteries was around 8:00 AM. Left units side by side for over an hour. Since then, around 8:00 AM outdoor sensor records temperatures much above real value. They soar to 90-105 F range then return to real temperature for the rest of the day, but the recording of a daily high stays at the erroneous level. Sensor is under the eaves on the N. side of the house so direct sun is not a problem. Also, not near a heat source vent.
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