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  • Trilogy PDL3500

    Heavy Duty Proximity Mortise Lock

    SKU: PDL3500CRL/26D

    Alarm Lock Trilogy

    The Trilogy PDL3500 Heavy Duty Proximity Mortise Lock provides coded or carded access to your doors. Eliminate the costs and hassles of issuing and managing keys. Expand your existing proximity card system to other facility doors where you are still using a traditional key. Not only does the user need their card, but they also must present their PIN code.

    Door Handing

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    3 Years of SHIELD Coverage

    Product Replacement | Extended Return Policy | Price Protection

    Terms and Conditions


    • Heavy Duty, steel-case BHMA compliant mortise lock.  UL listed, FCC certified
    • Compatible with any HID 125kHZ prox cards 26-48bit
    • Two-Factor PIN & Card Security
    • 2000 User codes/cards supported, including: Master, Manager, Supervisor and Basic Users. Also one-time entry code
    • Reads most HID prox card and fob formats of 125khz frequency
    • Choose from mortise latch with 3/4″ latch projection (classroom function) and mortise latch + deadbolt with 3/4″ latch projection, and 1″ deadbolt projection (office function)
    • With deadbolt function, deadbolt can be locked and unlocked from outside
    • Rugged clutch mechanism insures long life & durability
    • Program at lock, or using Windows PC based software
    • 500 timed lock/unlock schedule events, including 4 “quick schedules”
    • Easy Tap & Add batch prox ID card enrollment mode allows many cards to be quickly added without PC –also– downloadable from PC or prox enroller tool
    • Quick passage mode (enter without your code)
    • WeatherPROOF performance
    • New!  Remote Release Mortise Kit for ‘Buzz-In’
    • 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
    • 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
    • Easy to install.  Retrofits into standard mortise preps, modified by adding thru-bolt holes for a snug fit to door
    • Battery operation:  5 AA’s included; appx. 80,000 cycles; low battery alerts; lock may be hard-wired with 9VDC or 9VAC power supply for remote release / battery backup (9V’s sold separately)
    • Handing:  When ordering ‘classroom’ function, you don’t need to know your specific handing, as the lock is fully reversible.  For deadbolt function, you must specify right or left handing
    • Key Override/Emergency Key — Includes a 1-3/8″ long mortise cylinder from the manufacturer.  (comes with 2 keys)  All mortise cylinders are interchangeable so if you have a name brand one you want to use you can, or we sell name brand ones.  Please call us at (877) 439-5377 for custom cylinder orders
    • Keypad:  All metal, 12 button.  All functions programmable through keypad/software
    • Warranty:  2-year manufacturer

    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.

    Want to add card access or code access so you can eliminate the costs and hassles of issuing and managing keys?  How about expanding your existing proximity card system to other facility doors where you are still using a traditional key?  This new mortise lock can be an important part of any convenience and security upgrades because it eradicates the inherent security flaws associated with master key and keyed systems.   One of the important security features with the PDL3500 is that you can program it so it requires dual credentials for granting access.  Not only does the user need their card, but they also must present their PIN code.  This way when a card is lost and that person tries to get in, they will not be able to.

    See this same lock in PIN code only

    Office buildings, Healthcare facilities, Colleges/Universities, Military installations, Retail, Pharmacy, Schools, Government buildings, and more!


    Manufacturer Alarm Lock
    Battery Type AA
    BHMA Rating Grade 1 (Best)
    Event Scheduling 500, Automated Unlock/Lock
    Lock Features Old Audit Trail, Passage Mode, Scheduling, Timed Codes
    Radio Frequency 125 kHz
    Solution Electronic
    Warranty 2 Year Manufacturer
    Function Deadbolt
    Handle Type Lever Handle Door Locks
    Reader Type Prox Card/Fob
    Access Type Key
    Keypad - Digits
    Proximity Card/Fob
    Locking Device Mortise
    Mortise w/Deadbolt
    Brand Alarm Lock Trilogy

    Door requirements

    Battery Life 80,000 Cycles
    Door Prep Mortise


    Code Length 3 to 6 Digits
    Users 2,000


    Exterior Dimensions 11 1/16 (H) x 3 (W) x 2 7/16 (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 2 7/16 (D) in.
    Weight 10 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