Before installing the Knox KeySecure 3B, ensure that you have:

: For building installations (standard Knox Box units), it is generally recommended to mount the unit 5 to 6 feet (or up to 8 feet depending on local jurisdiction) above ground level, near the primary entrance, and in a visible location for emergency responders. Key Features & Operation

Note: follow on-device prompts exactly; the sequence below is a common pattern but may vary slightly for KeySecure 3B.

| Issue | Probable Cause | Solution | | :--- | :--- | :--- | | | Cutout was made too large. | Use shims behind the mounting flange or apply a silicone sealant trim. | | Unit binds when locking | The can is not seated flush/deep enough. | Check for internal obstructions (insulation/wires) pushing the back of the unit. | | Door won't close | Unit protrudes past door stop. | Verify the backset depth; Profile 3B requires a deeper cavity than surface mounts. |

: It is recommended to mount the unit approximately six feet above the ground to resist vandalism. storagemunicibidpro.blob.core.windows.net 2. Electrical Installation Power Requirements