Product review (5 stars): GREAT LITTLE TEMPERATURE/HUMIDITY DISPLAY
I am a firm believer that simplicity sometimes is best. The humidity and temperature sensor is very simple. Remove the battery holder on the back, pop in the included button battery and you are in business.

The 1" display shows humidity level and temperature, so the next step is selecting Fahrenheit or Celsius. The unit will also capture data but there is a small red button to erase the memory. This is a really nice, simple, easy to use piece of technology! You can't really go wrong by purchasing this unit.