Vadodara : Loop it Lock it ALARM IT ! Security of your valuables and personal property has always been a concern when left unattended. The problem with ordinary locks is they just silently wait for thieves to come along. A Siren lock is different as it has an ear piercing alarm. Attempting to cut through the lock starts the alarm screaming, attracting attention and scaring away the potential thief. According to Police and other law enforcement agencies noise is the best deterrent against crime.