Since 2008, the number of residences having safes has increased significantly. Commercial safe sales have also increased. Many of the new safes sold are equipped with an electronic safe lock. Just about every safe manufacturer either offers the electronic safe lock as an option or on some models...
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Since 2008, the number of residences having safes has increased significantly. Commercial safe sales have also increased. Many of the new safes sold are equipped with an electronic safe lock. Just about every safe manufacturer either offers the electronic safe lock as an option or on some models as standard equipment.
Electronic safe locks are convenient and the safe can be opened faster than when dialing a mechanical safe lock. The idea behind the electronic safe lock was to simplify dialing the combination to eliminate user errors. Electronic safe locks eliminate having to remember how many turns for each number and which direction to rotate the dial.
The electronic safe lock has become very popular. However, with the good usually comes the not so good. Though more difficult to operate, mechanical safe locks have a nominal failure rate. Electronic safe locks contain electronics, which are prone to failure at some point in time. Safe lock failure is very different from just about any other type of lock failure.
Enter the new NL Lock Duet Safe Lock, the DL20-20 Electronic Lock with Mechanical Override. This model is designed for two user codes. This straight bolt, redundant safe lock contains both a mechanical three-wheel lock and an electronic lock built into one lock case. The NL Lock Duet is a Group 1 Electronic and Mechanical Group 2M rated lock offering the convenience of an electronic lock with the nominal failure rate of a mechanical lock. Unlike other redundant safe locks that have both a separate dial and digital keypad, the Duet has a digital keypad built into the dial.
If one mechanism fails to operate, the safe can be opened using the other, eliminating the possibly to have to drill and repair the container.
Duet combination lock electronic components include a motor-driven release mechanism. When the six-digit combination is entered into the keypad, the motor rotates only one-quarter revolution, removing the blocking mechanism. This permits the lever to slide into the fence. The unlocking timeframe is four seconds to rotate the dial clockwise until the bolt is retracted. After the four-second unlock period, the spring-loaded fence blocker arm releases. In this position, the bolt can only be extended. As the bolt extends, the blocker returns to the neutral position.
To operate the lock electronically, the Duet has a keypad across the top of the housing. Two rows of numbers have a red LED positioned between numbers 1 and 2 and 6 and 7. The LED illuminates and the piezo sounds each time a number is pressed. When the correct “master” code (combination) has been entered, the LED will illuminate twice and piezo sounds twice. Within four seconds, rotate the dial clockwise until the bolt retracts and the dial stops. If an incorrect code has been entered, the LED illuminates and the piezo sounds for approximately two seconds.
To operate the Duet lock mechanically, rotate the dial to position the three wheels in order to retract the bolt. Begin by rotating counterclockwise (left) to the first number and then three more rotations, positioning that number directly beneath the opening index. Rotate the dial clockwise (right) passing over the number and continuing to rotate two more rotations, positioning that number directly beneath the opening index. Rotate counterclockwise to the third number and then one more rotation, positioning that number directly beneath the opening index. The final rotation is clockwise when the lever slides into the fence and retracts the bolt to the unlocked position. The dial stops beneath the opening index between 90 and 95.
Important: When changing the combination, keep the door open.
Electronic Combination Change
Enter the existing code. The lock will beep and illuminate twice to confirm the correct code. Open the safe door.
With the safe door open, press and hold the “0” button until a double signal is emitted. The LED will illuminate and stay lit during the programming procedure.
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