Mul-T-Lock products are each a part of an integrated system.  Mul-T-Lock's advanced key and cylinder, with their sophisticated mechanism and telescopic tumbler pins, provide a common link between all of the company's products.

Based upon a vision of total product integration, Mul-T-Lock has developed a sophisticated unique access control system.  Every lock used at home, in the office, or in institutions and organizations, may be integrated into a Master Key system.  User friendly software designs Master Key systems with control levels meeting the highest security standards.  Locks can be keyed-alike, keyed-different or master-keyed in accordance with the customer's selective entry requirements.  The newly launched Interactive line of products sets new standards for patented keys and restricted key-cutting systems.

The Mul-T-Lock 3 in 1 system enables the user to change lock combinations twice with the turn of a key.  it's the perfect immediate solution to the problem of employee or rental turnover security.  the customer is supplied with two green dotted keys plus one red packet and one yellow packet.  Each packet contains a key order card and a matching color-dotted key.

To change the combination, simply insert the yellow key and operate the cylinder.  The green key is now disabled.  To change the combination again, simply insert the red key and operate the cylinder.  The yellow key is also now disabled.

For additional combination changes, a Mul-T-Lock dealer should rekey the 3 in 1 cylinder to a new combination.  The 3 in 1 system is available on any Mul-T-Lock product and is available in Classic or Interactive.