For Immediate Release
October 20, 2008
Alarm Lock Systems, Inc.
345 Bayview Ave.
Amityville, NY 11701


Alarm Lock’s Trilogy 4100/4500 Series: Now With Interior LED

Alarm Lock will soon introduce an enhanced version of its Trilogy privacy locks. Now, our privacy push button locks, Trilogy 4100 and 4500 will have an interior LED on the inside housing which indicates when the privacy session is active. Consumers can now rest assure knowing that they are safely within a room all the while locking out unauthorized users.


A self-stick instructional sign helps guide customers on how to activate and deactivate the privacy feature. An occupied flashing multi-status LED indicator on the outside of our lock notifies users when the privacy session is active and the room is locked. Only after the user pushes the privacy button on the back of the inner door, will the door temporarily lock-out keypad codes. Simply reopening the door from the inside or when the privacy session “times-out” following a preset period, allows keypad PIN or PIN/Prox access to resume.


Our 4100 and 4500 series come with 5AA batteries, which typically yields 60,000 cycles.  Cylindrical and mortise locking styles are available in PIN or PIN/Prox models. DL/PDL4100 and DL/PDL4500 are ideal for single occupancy restrooms, dressing rooms, hospital on-call sleeping rooms, executive offices and confidential file rooms. DL/PDL4500 must be ordered right or left-handed, and are available in deadbolt version only. DL/PDL4100 comes in standard key override or interchangeable core configurations. 2000 PIN or PIN/Prox user codes, 500 scheduled events and 40,000 audit trail allow these locks to best serve your security needs. Weatherproof technology allows our 4100/4500 locks to withstand conditions from -31˚F to 151˚F.


For residency applications, our programmable residency feature from the lock’s keypad allows users to exit, closing the door behind them while the lock remains unlocked until it is physically relocked. This free-exit/passage mode is ideal for residents who may repeatedly find themselves unintentionally locked out without their Prox ID or PIN code. To learn more about Alarm Lock’s enhanced 4100/4500 series, call 1-800-252-5625 or visit



About Alarm Lock Systems, Inc.


For more than three decades Alarm Lock Systems, Inc. has built a strong reputation as a respected leader in door technologies. Our wide range of electronic access locks has pushed all the right security buttons for security directors, business owners, and facility managers, who know that Alarm Lock’s keyless access dependably promises time-automated security and a wealth of management information. Meanwhile, Alarm Lock’s door alarms and panic exit hardware devices remain unmatched in performance in the locking industry. Alarm Lock Systems, Inc., is a Napco Security Group Company publicly traded on NASDAQ: NSSC.

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333 Bayview Avenue, Amityville, NY 11701 (631) 842-9400 Fax: (631) 789-9292 email:
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