For Immediate Release
March 28, 2008
Alarm Lock Systems, Inc.
345 Bayview Ave.
Amityville, NY 11701


Get Secure With Alarm Lock’s Trilogy DL/PDL3500 Series Mortise Digital Locks
Many businesses are looking to Alarm Lock Systems to provide them with advanced security solutions. With over 30 years of locking experience, we continue to produce products that are technologically adaptive to our changing world. Our popular DL/PDL3500 Series mortise locks come with high security features that are invaluable for all businesses.

Alarm Lock’s DL3500 Series mortise lock exemplifies high security with its 300 multilevel user codes, including master, manager, supervisor and basic user. Our DL3500 is fingertip or Windows PC programmable for easy inputting. A real time clock enables up to 500 scheduled events and holiday schedules and 40,000-event audit trail provides a printed time-/date-stamped log of all electronic activities. A long-life 5AA battery-pak typically lasts for 80,000 cycles and alerts you when batteries are low. For added flexibility, DL3500 comes in classroom or deadbolt versions, left or right handing and a 1 3/8” (3.5 cm) mortise cylinder is supplied. Card enrollment mode allows users to quickly program many cards to DL3500 without a PC. If you prefer to enroll users via computer, you may use DL-Windows software or AL-PRE.

PC programming and reporting is simple with our DL3500 and our quick passage mode is useful to those assigned to bypass program mode. Quick passage mode can simply be turned on without being in program mode. Users count on DL3500 to function well in extreme temperatures ranging from –31˚ to 151˚F (-35˚ to 66˚C). DL/PDL3500 adapts nicely to many environment since it comes in 7 unique finishes including Satin Chrome, Polished Brass, Polished Chrome, Antique Brass, Duronodic, Satin Brass and satin Bronze. Similar to DL3500, our PDL3500 Series high security mortise lock comes with built in HID prox reader capability for 2000 user codes and/or HID prox cards/fobs.

To learn about Alarm Lock’s Trilogy DL/PDL3500 series, visit or call 1-800-252-5625. A customer service representative will gladly assist you in locating your local rep or distributor.

About Alarm Lock Systems, Inc.

For more than three decades Alarm Lock Systems, Inc. has built a strong reputation as a respected leader in the design and manufacture of electronic and mechanical access and egress control products. 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.

High resolution photography available upon request; contact
High resolution photography available upon request; contact
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333 Bayview Avenue, Amityville, NY 11701 (631) 842-9400 Fax: (631) 789-9292 email:
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