Hornady Digital Hygrometer 

Hygrometer displays high/low for temperature and humidity in Fahrenheit or Celsius on large touchscreen display. Install quick-connect bracket on interior door or wall of safe or vault room, or use fold-out stand.

• Indoor thermometer and humidity sensor for safes and vault rooms.
• Displays high/low for both temperature and humidity in either Fahrenheit or Celsius.
• Large touchscreen display.
• Install the quick-connect bracket on interior door or wall to save space and allow easy viewing and retrieval.
• Includes fold-out stand for convenient storage on shelf or floor of safe.
• Powdered by two AAA batteries (not included).