Operating instructions

CEX-08 FEATURES

The CEX-08 lock is a variation of the X-08 lock that includes a Covert Entry detection

feature. The Covert Entry function is used to indicate that the normal operation of the

CEX-08 has been compromised. The following section describes the unique features and

operations of the CEX-08. You should already be familiar with the standard opera-

tion of the X-08 as described in the preceding sections before proceeding.

CEX-08 INDICATORS

The CEX-08 will display one of four different indicators when you dial left to “power ”

the lock:

CA - Indicates that Covert Entry detection is Active and access to the lock is allowed.

CE - Indicates that a Covert Entry condition exists.

SA - Indicates that a Surreptitious Entry Attempt condition exists. (This indicator is

also applicable for the X-08.)

SC - Indicates that both a Surreptitious Entry Attempt and a Covert Entry condition

exist.

CA is the normal condition indicator that you will see displayed when you power the

lock. CE, SA, and SC are all error conditions that need to be addressed from a security

standpoint and require action to correct them.

COVERT ENTRY DETECTION

A Covert Entry condition is indicated by CE displayed upon lock power up.To detect

Covert Entry, the microprocessor monitors the lock bolt position to make sure it matches

the condition of the combination input. It must have a matching open or close condition.

A covert entry is set from the following three conditions:

1. The bolt being forced in when there is not a valid combination.

2. The lock being dialed while the last open does not have a matching close. (The

lock requires at least a full turn of the dial to start into dialing. It should not be

mechanically possible to turn that far while the bolt is retracted.) The reed switch

monitoring the bolt may have been tampered with or the back cover removed.

3. The lock getting a close without a matching open. The reed switch monitoring the

bolt may have been tampered with.

The CE condition must be reset using the Reset Combination before the lock will open

and operate normally.