Product review (2 stars): Not for Garage or Basement - My Wrist Watch Alarm is louder
While the unit does monitor the Temp for Freezer or Refrigerator, the volume of the alarm is surprisingly soft. My wrist watch alarm is louder than this thing.  If you want to monitor your Freezer Temp in the kitchen or someplace where you walk by every day, this unit is OK. If you have your Freezer in the basement or garage where you need an audible alarm to warn you of a melt down this unit is not for you.