Gardall Model 1812-2

U.L. Group 2 Mechanical Lock

U.L. (Underwriter's Labratory, Inc.) is an independent, third party product certification organization that rigorously tests products to ensure they conform to certain safety and security standards. U.L. defines Group 2 combination locks as resistant to semiskilled manipulation attacks. A manipulation attack is any attempt to discern the combination on the lock using the features and weaknesses in the design of the lock. Group 2 locks are the most common locks available on most safes. U.L. also defines the minimum number of combinations that the lock will allow.  However, this is a technical specification and on most locks there are specific recommended restrictions in assigning a combination that effectively limits the allowable combinations.  Group 2 locks are also required to have an internal relocking system that fires when the lock is punched.  Punching (using a hammer and punch tool) is done to try to push the lock off the back of the safe by driving a punch (or any object long and sturdy enough) through the dial spindle hole. 

SARGENT AND GREENLEAF ELECTRONIC LOCK 6120 FEATURES:

 All Combination changes and programming are easily made at keypad. Uses two (2), 9V Alkaline batteries -Duracell® recommended. (E-Z keypad uses (1) 9V battery.) Keypad feedback with beep and LED flash. Multiple users - one Master code and eight user codes are available. Programmable Time Delay. Motor driven bolt. Wrong combination try penalty. U.L. Type 1 listed.

You may pre-set the 3 digit combination on the combinational dial lock for an additional fee. Example: 33-01-67. The last number can not be lower than 21 or higher than 80.