The is a high-security key retention system designed for mounting in emergency vehicles or on building walls to provide authorized personnel with secure access to master keys. Installation Requirements
Follow this sequence exactly. Deviation is the #1 cause of post-installation overheating alerts. knox keysecure 3b installation manual hot
| 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. | The is a high-security key retention system designed