The lock alarm xt is similar to the cable lock alarm item 6796 but has double the thickness of cable to provide an even higher level of security for your valuable possessions incorporated into the device is an ear piercing siren that will scare away potential thieves when an attempt is made to cut through the ultra hard steel cable or attack the main lock unit the alarm starts screamingcompact and simple to use the lock alarm xt can provide 24 hour protection for valuables left unattende