AMSEC WFS149E5LP Fireproof Wall Safe digital-electronic-lock There is an indicator window

There is an indicator window with special moisture meter crystals that change from orange(when dry) to green (when wet) to indicate when your unit needs to be recharged

That's why the Barska AX11680 Hidden Dictionary Book Lock Box is such a clever idea

Interior Cubic Feet: 2

75" W x 16

There are two methods of counterfeit detection

AMSEC WFS149E5LP Fireproof Wall Safe digital-electronic-lock There is an indicator windowAMSEC WFS149E5LP Fireproof Wall Safe The AMSEC WFS149E5LP is designed to provide hidden protection for documents and miscellaneous valuables hidden in the wall behind a picture frame or mirror. The WFS149E5LP is a fireproof wall safe with a one hour fire rating, insuring the inside temperature never exceeded 350 degrees F. Since it has an extra deep interior, you can fit all your valuables that you want to remain hidden and protected from a fire.