Battenfeld Lockdown Golden Rod Wireless Hygrometer

Designed to display the humidity in your vault without ever opening it. Wireless LCD display clearly shows the in-vault and in-room humidity and temperature levels through its two piece sensor design. Simply place the sensor in your vault and put the display screen on your vault with its built in kick stand support or magnetic back. Hygrometer measures and displays humidity from 20% to 90% and while also recording minimum and maximum records. Battery operated.