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Figure 11: AP-135 Top view
Figure 12: AP-135 Bottom View
3.2.4 Inspection/Testing of Physical Security Mechanisms
Physical Security Mechanism
Recommended Test Frequency
Guidance
Tamper-evident labels (TELs)
Once per month
Examine for any sign of removal,
replacement, tearing, etc. See
images above for locations of
TELs
Opaque module enclosure
Once per month
Examine module enclosure for
any evidence of new openings or
other access to the module
internals.