SDC - 1511TNAKV - Tandem Delayed Egress - EM Lock - Selectable Delayed - Surface Mount - 1650lbs. - 12/24VDC - Aluminum - Fire Rated - Grade 1 MaximumRestricted The Trilogy DL4100IC Series is

The Trilogy DL4100IC Series is Alarm Lock's one of the most popular standalone pushbutton Mortise lock with Grade 1 durability

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SDC - 1511TNAKV - Tandem Delayed Egress - EM Lock - Selectable Delayed - Surface Mount - 1650lbs. - 12/24VDC - Aluminum - Fire Rated - Grade 1 MaximumRestricted The Trilogy DL4100IC Series isThe 1511T series incorporates all ExitCheck features for double door applications through a slave lock output to enable the use of two units for pairs of doors to ensure pushing either door leaf will cause both doors to release.. The patented design revolutionized delayed egress by incorporating an alternating verbal message, verbal countdown and alarm tone, plus a large digital countdown display and door release indicator to provide a clear warning