This key keeper box stores multiple keys or cards - 10 to 15 or so depending on the head size of the key or access cards. This is a very heavy duty little box. This model can be screwed on to any flat surface.

No battery needed for this box!
Dimensions:
Inside: 3 5/8" H x 2 3/8" W x 1 3/4" D
Outside: 5" H x 3 1/2" W x 2 1/2" deep