Centurion SMART GUARD air Operating Instructions Manual page 5

An Anti-hack feature can be enabled, causing the unit to
shut down after a pre-selected number of incorrect codes
have been entered. The unit will then reset after a pre-
selected time. A telltale LED will indicate that the Anti-hack
feature has been triggered.
Once programmed, the system can be backed up onto the
optional Backup Memory Module (Code PCA12201V1.0).
This allows the system to be easily restored if required.
An optional independent Anti-tamper Switch can be fitted
and wired internally to transmit an alarm signal if the unit
has been forced open, or removed from its mountings.
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