Hornady Hygrometer Digital. 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 shelf space and allow easy viewing and retrieval. Includes fold-out stand for convenient storage on shelf or floor of safe. Powered by two AAA batteries (not included). Specifications for Hornady Digital Hygrometer: Manufacturer: Hornady Color: Black/Red Quantity: 1 Package Contents: Hornady Digital Hygrometer Hornady 95909: Hygrometer Digital