I checked the temperate via the Bureau of Meteorology app at around 6 am this morning. It was a chilly 10 degrees (centigrade or Celsius) This thing was telling me it was 20 degrees. There was no way it was 20 degrees. Similar thing in summer. This would day it was maybe 28 degrees, the BOM app would say 35 degrees.
I wouldn't waste my money on this or if you do buy one and it doesn't work properly return it before the return window is closed.