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.Features and Specifications:Manufacturer Number: 95909Indoor 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 shelf space and allow easy viewing and retrieval.Includes fold-out stand for convenient storage on shelf or floor of safe.Note: Requires two AAA batteries (not included)