Product review (1 stars): Outdoor sensor stopped working - a very disappointing purchase!
UPDATE.  I received a new outdoor sensor after complaining to Acurite.  And the new unit is also faulty. On a nice Spring day in the Northeast, where the temperature is about 66C, the new snsor is registering 161C!!  What a waste of money.  I've reduced the rating from two stars to one...only because there is no lower rating.

I've been using this unit for over two months and I'm ready to throw it out.  Initially, it worked very well and I was very please that I could monitor the indoor and outdoor temperatures/humidity levels very conveniently on the very easy-to-read display.  However, after about one month the main unit lost contact with the outdoor sensor.  I reset both units by installing new batteries and I was once again able to monitor the outdoor readings.  But, recently, the outdoor sensor stopped transmitting altogether and, even with new batteries and multiple resets, it still does not work.  The indoor reading continues to be available but this is only half of what I need....and a large blank area on the screen is annoying.  I'm very disappointed with this purchase and will look to buy a more reliable model from a different manufacturer