Alarm Lock Systems Inc., a division of NAPCO, adds to its leading line of innovative electronic pushbutton access locks with the new Trilogy DL4100 Electronic Digital Privacy Lock. Like Alarm Lock’s Trilogy T2 keyless cylindrical lock, the stand-alone DL4100 uses a modified ANSI cylindrical door prep, for easy installation in about an hour, and can be used in any application large or small, from businesses and hospitals, to retail stores and universities. Supporting up to 2,000 individual user codes (including management and master code overrides), the DL4100 has a unique privacy feature, activated with the push of a button on the back of the lock. Once the privacy button is depressed, the lock cannot be opened from the front entry side for a preprogrammed duration, which makes the product ideal for bathrooms, dressing or fitting rooms, and more. Alarm Lock Systems

For Free Information circle 272 or visit or