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668 G/GF - Locks with self locking systems (SLS)

SLS is an ingenious protection system for armoured doors fitted with the 668G/GF series of gear locks with European profile cylinders. If the cylinder is removed by force while the door is closed and the bolts are locked in the extended position (break-in attempt), the Self Locking System is activated automatically, preventing the attempted break-in and locking the door irreversibly.
Technical Features
  • The SLS is non-handed, therefore it is field reversible.
  • If the system is accidentally activated, it is possible to reset SLS, but this procedure may only be performed by an expert technician, so you should contact the door manufacturer.
  • Once the SLS has been activated, the deadbolt pistons remain locked in the extended position, as do the high/low sliders of the lock (to which all the other supplementary locks are connected), leaving the door locked and closed.