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  • Trilogy DL4500

    Stand-alone Access Control Mortise Lock

    SKU: DL4500DBR/26D

    Alarm Lock Trilogy

    The Trilogy DL4500 is a keyless, coded solution for your doors. Manage this lock using the keypad or by using your PC with the software.  It features timed access, audit trail, and the ability to upload user schedules from your PC. Solve the problem of left or propped open doors forever. Suitable for securing panic exits at hospitals, schools, restaurants and more!

    Door Handing

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    3 Years of SHIELD Coverage

    Product Replacement | Extended Return Policy | Price Protection

    Terms and Conditions


    GK Care Technical SupportHourly rate for GoKeyless clients only (reg. rate is $115/hour) Read MoreCustom Setup & ProgrammingLet us do the work for you. We get you up and running. Read More


    • Heavy Duty, BHMA Grade 1 mortise lock with deadbolt
    • Privacy/Lockout Feature:  Engaged by pushing button on interior lock body – assures lock cannot be opened from front-entry side
    • Programmable Residency feature to prevent accidental lockouts
    • Iconic bilingual Privacy and Residency Instructional Signs supplied with lock
    • Rugged clutch mechanism insures long life & durability
    • 500 timed schedule capacity, including 4 “quick schedules” for programming the 4 most common time schedules in one step
    • 2000 User Codes including: Master, Manager, Supervisor and Basic Users. Also one-time entry code
    • WeatherPROOF performance
    • Satin chrome finish.  Custom premium finishes, polished chrome, bright brass, satin brass, antique brass, and duronodic available upon request
    • New!  Remote Release Mortise Kit for ‘Buzz-In’
    • Times entry allowance from 5-15 seconds
    • Greater security with “Temporary Keypad Lockout” after 3 unsuccessful code-entry attempts
    • Audit Trail with Time/Date Stamp for a printable record of all electronic activity
    • Real Time Clock Allows logging of events to within 1 second of accuracy
    • Relay may be programmed to energize when one or more selected events occur
    • 4 Time-Out functions allow a user to enable other users or unlock the lock for some time period without needing to return to the lock
    • 1600 Audit trail history per timed event schedule
    • Latch-bolt is UL listed, 3 hour fire rated
    • Easy to install.  Retrofits mortise locksets
    • Battery Operation:  5 AA’s; appx. 75,000 cycles; low battery alerts; lock may be hard-wired with 9VDC or 9VAC power supply for remote release / battery backup (9V’s sold separately)
    • Key Override/Emergency Key; includes a 1-3/8″ long mortise cylinder from the manufacturer.  (comes with 2 keys)
    • Keypad:  All metal, 12 button.  All functions programmable through keypad/software
    • UL listing to the 10C positive pressure specification
    • Warranty:  2-year manufacturer

    Note:  When selecting the standard cylinder option, your lock comes with a 6-Pin, solid brass, Schlage SC1 keyway.  You may also use other Schlage cylinders, or Corbin-Russwin CL, Sargent 480, ASSA 65-611, & Lori cylinders.   If selecting one of the IC – Interchangeable Core cylinder formats upon clicking the “Buy Now” button, you will have the option to order your matching IC cylinder cores themselves, as well as have them keyed up to match your existing master key system, or keyed differently.  Of course you can simply checkout without ordering the IC cylinder core itself, and then just use your own IC cores in the lock.   (If you do order it Best IC, you can use your own Best, Falcon, Arrow, Eagle, KSP, or LM brand IC cores in the Best IC prep)


    GoKeyless™ is a factory trained and authorized Alarm Lock Trilogy dealer. Sales, service, support, valid warranties. It's why thousands of clients around the world choose GoKeyless™ for their security and access control needs each year.

    Ideal for on-call room, classroom, file room, fitting room, restroom, and darkroom doors with mortise preps, the Trilogy DL4500 lock features timed lock/unlock, audit trail, and the ability to use a hand-held DTM data transfer module to upload your user data and access schedules from a desktop computer.  The DL4500 mortise lock is a proven access control solution that you manage by fingertip at the lock’s keypad, or by using your laptop or desktop PC with the software that is included. (computer connecting cables required and sold separately at checkout – software CD included with purchase of cables, or can be downloaded from Alarm Lock website)  The software features a simple to follow user interface giving you total control.  You can even review who entered and when.  Need to establish access privileges?  Done.  Simply use the built-in multi-level programming functions to create your group or individual user codes, master and management codes, passage codes, and emergency or service codes.  Vandal-resistant and perfect for securing college and school classroom doors, single-occupancy restrooms, dressing rooms, darkrooms, hospital on-call/sleeping rooms, executive offices, confidential filing rooms, and more!


    Manufacturer Alarm Lock
    Battery Type AA
    BHMA Rating Grade 1 (Best)
    Event Scheduling 500, Automated Unlock/Lock
    Keyway Schlage SC1
    Lock Features Old Audit Trail, Passage Mode, Privacy, Scheduling, Timed Codes
    Solution Electronic
    Warranty 2 Year Manufacturer
    Handle Type Lever Handle Door Locks
    Access Type Key
    Keypad - Digits
    Locking Device Mortise w/Deadbolt
    Brand Alarm Lock Trilogy

    Door requirements

    Battery Life 75,000 Cycles
    Door Prep Mortise, Through-Bolt Hole(s)


    Code Length 3 to 6 Digits
    Code Capacity 2,000
    Fire Rating UL 3 hr. Latch


    Exterior Dimensions 11 1/16 (H) x 3 (W) x 1 15/16 (D) in.
    Inside Dimensions ["11 1/16 (H) x 3 (W) x 31/32 (D) in."]
    Door Thickness Minimum 1 3/8 in.
    Door Thickness Maximum 1 7/8 in.
    Door Stile Width Minimum 5 in.
    Exterior Dimensions 11 1/16 (H) x 3 (W) x 1 15/16 (D) in.
    Weight 12 lbs

    *Basic email support only. Additional support time available for a fee.

    You are not comparing apples to apples when shopping for Trilogy locks online.

    GoKeyless is a full service company and backs up its sales support with product and technical support.

    What good is the lock to you when you have to spend countless hours trying to find the answer to something when you could have just contacted the experts.

    In addition to answering technical questions for you — troubleshooting only, does not include training, or programming — our agents are also available for paid training on importing your users, communicating with the lock, establishing your mission critical access schedules, navigating the software, and utilizing all of the features and functions of your new access control system.

    Our virtual support fees start at $70/hour or can be purchased as an annual tiered service.

    Technical Support Hours: M-F 9am-5pm EST