Product review (1 stars): Don't Bother - Not Recommended.
Not Recommended.  Out of the box, item shows indoor temperature and humidity correctly, outdoor temperature and humidity is correct for few a minutes then defaults to 32 degrees Fahrenheit while receiver indicates strong signal and both units have new batteries.  Moved outdoor transmitter indoors and there was no change.  Rebooted indoor unit by removing the batteries and the cycle repeats again and again.  Tried placing both units side-by-side. Same problem. Same cycle.