What is a key requirement for all Knox-keyed devices?

The requirement that Knox-keyed devices must be installed securely in an approved manner is essential for ensuring safety and effectiveness in emergency situations. These devices are part of the emergency access system used by fire departments, allowing firefighters to enter buildings quickly without causing damage. A secure and approved installation helps maintain the integrity of the device and ensures that it functions properly when needed.

When installed correctly, these devices can be relied upon by personnel to access buildings rapidly and safely, particularly during emergencies where every second counts. An inappropriate or insecure installation could lead to malfunctions or delays in response, undermining the very purpose of having the Knox key system in place for emergency responders.

Other options may suggest aspects of accessibility, modification, or procurement, but they do not reflect the critical importance of proper installation, which is vital for operational reliability in emergency contexts.