Alarm Lock PDL3500CR Grade 1 E...
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Alarm Lock Alarm Lock PDL3500CR - Classroom Trilogy High Security Electronic Proximity Mortise Locks ALA-PDL3500CR

Alarm Lock PDL3500CR Grade 1 Electronic Proximity Mortise Lock with Dual Authentication

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Model: PDL3500CRR/US26D
$3,103.52
$1,479.62
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Alarm Lock PDL3500CR Grade 1 Electronic Proximity Mortise Lock with Dual Authentication

Professional-Grade Classroom Security with Dual Authentication Technology

Heavy-duty proximity mortise lock offering secure access using a proximity card and PIN code, eliminating the need for traditional keys. Compatible with HID II 26–37 bit card format. The Alarm Lock PDL3500CR delivers Grade 1 commercial security with dual authentication capabilities, combining electronic keypad and HID proximity card access in a single mortise lock system. This weatherproof electronic lock operates reliably from -31°F to +151°F with battery-powered operation providing up to 75,000 cycles from a 5AA battery pack, accommodating door thickness from 1-5/8" to 1-7/8" with 2-3/4" backset configuration.

Professional Features & Benefits

  • Grade 1 Commercial Rating: Meets the highest ANSI/BHMA standards for durability and security in demanding commercial applications with superior performance reliability.
  • Dual Authentication System: Supports both proximity cards/fobs and electronic keypad codes for flexible access control and enhanced user convenience in classroom environments.
  • High-Capacity User Management: Accommodates up to 300 user codes for comprehensive access management in large facilities and educational institutions.
  • Extended Battery Life: 5AA battery pack provides up to 75,000 cycles of operation without hardwired power requirements for reliable standalone performance.
  • Weatherproof Construction: Operates reliably in extreme temperature conditions from -31°F to +151°F for both indoor and outdoor commercial installations.
  • Professional Electronic Interface: 12 metal button electronic keypad provides secure code entry with professional tactile feedback and commercial-grade durability.
  • Comprehensive Audit Trail: Built-in logging functionality enables professional security monitoring and access tracking for facility management and compliance.
  • Flexible Door Compatibility: Accommodates door thickness from 1-5/8" to 1-7/8" with 2-3/4" backset for versatile installation options.

Technical Specifications

  • Door Thickness: Fits 1 3/8" to 1 7/8"
  • Strike: 1 1/4" x 4 7/8" strike included
  • Handing: Specify RH or LH when ordering; lock is reversible in the field
  • Power: 5 AA alkaline batteries (included)
  • Keypad: Weatherproof all metal, 12 button. Proximity antenna housing molded of ultra high strength, impact resistant Lexan®
  • Compliances: Steelcase lock body meets BHMA specifications for Grade 1 locks. UL Listed to the 10C Positive Pressure Specification. FCC Certified. ADA compliant levers
  • Functions: Classroom function: stainless steel latchbolt with 3/4" projection & deadlocking latch. Deadbolt function: stainless steel deadbolt with 1" projection, latchbolt with 3/4" projection & deadlocking latch.
  • Cylinder: 1 3/8" mortise cylinder supplied. Accepts 1 1/4" to 1 1/2" mortise cylinder.

Installation & Operation

  1. Verify electrical requirements and confirm battery specifications before beginning installation. Ensure 5AA battery pack compatibility and access for future maintenance.
  2. Disconnect any existing power sources and follow all applicable electrical codes and safety procedures during installation.
  3. Mount the mortise lock in the prepared door opening ensuring adequate clearance for electronic components, battery compartment, and proximity reader access.
  4. Route and connect wiring for the electronic keypad and proximity reader according to manufacturer wiring diagrams and door hardware specifications.
  5. Configure operational settings including user codes, proximity credentials, and audit trail features per application requirements and facility security policies.
  6. Install the 5AA battery pack and test all functions including keypad operation, proximity card access, dual authentication modes, and audit trail logging capabilities.
  7. Complete final inspection and document all user codes and system settings. Refer to manufacturer documentation for complete programming instructions, maintenance schedules, and troubleshooting procedures.

Professional Applications

  • Educational Facilities and Classroom Security
  • Commercial Office Buildings
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Retail and Hospitality Establishments
  • Industrial Facility Access Control

Why Choose Alarm Lock Quality?

Alarm Lock delivers professional-grade security solutions with Grade 1 commercial rating and weatherproof construction designed for reliable performance in demanding commercial environments. The PDL3500CR combines proven mortise lock durability with advanced electronic access control technology, rated for up to 75,000 battery cycles and backed by comprehensive audit trail functionality for professional security management in educational and commercial applications.

Product Specs

Series:
PDL3500 Series
Grade:
Grade 1
Keypad:
Electronic, 12 metal buttons
Power:
Battery Operated
Product Type:
Mortise Locks
Application:
Proximity Card and Pushbutton Keypad
Lock Type:
Mortise
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Subcategory:
Mortise Locks
Reader Type:
Keypad and Proximity
Commercial/Residential:
Commercial
Electronic:
Yes
Battery Operated:
Yes
Batteries:
5AA battery-pak operated, 75,000 cycles
Audit Trail:
Yes
User Codes:
300
Weather Proof:
Yes
Product Attribute:
Electronic Locks
Product Model:
PDL3500
Product Function:
Classroom
Door Thickness Range:
1-5/8" to 1-7/8"
Door Strike:
T-Standard and ASA
Product Category:
Electronic Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Alarm Lock PDL3500CRR/US26D – Frequently Asked Questions

1) What door thickness does the Alarm Lock PDL3500CR proximity mortise lock fit?
The PDL3500CR is built for doors 1-5/8 to 1-7/8 inches thick, which is thicker than the 1-3/4 inch standard commercial leaf but covers it. If your openings are 1-3/8 inch older interior doors, this is the wrong lock. Mortise prep with a 2-3/4 inch backset is what the lock body expects, so an existing 2-3/8 inch backset cylindrical prep will not take it without a new mortise pocket.
2) Will the PDL3500CR latch into the strike already in my frame?
A 1-1/4 by 4-7/8 inch strike ships with the lock, and the lock body works with both T-standard and ASA strike preps. The classroom function throws a stainless latchbolt with 3/4 inch projection and a deadlocking latch; the deadbolt version adds a 1 inch deadbolt throw. If your frame is cut for an ASA strike you are already prepped; a T-strike frame takes the included strike.
3) Do I have to specify handing when ordering an Alarm Lock PDL3500CR?
Handing gets specified on the order, right hand or left hand, and each handing comes in oil rubbed bronze (US10B) and satin chrome (US26D). The lock is field reversible, so a wrong call on the door swing is recoverable on site rather than a return. Keying also has to be picked at order time: keyed different, keyed alike, or to a supplied key code.
4) What mortise cylinder does the PDL3500CR take, and can I put it on my existing master key system?
A 1-3/8 inch mortise cylinder comes with the lock, and the body accepts any 1-1/4 to 1-1/2 inch mortise cylinder. That range is what lets a locksmith swap in a cylinder from the building's existing keyway and bring the opening onto the house master. Order it keyed alike to the rest of a group, keyed different, or to a specific key code if you already run a system.
5) Does the PDL3500CR need to be wired to building power or an access control panel?
No wiring to the door. It runs on a 5AA battery pack rated for 75,000 cycles, so it is a standalone opening with no power transfer hinge, no transformer, and no panel drop. That is the practical difference from a wired electromechanical mortise lock like the BEST 45HW, which needs 12V or 24V run to the door, or the Command Access ML190 at 24VDC. If you want cards and codes on a door with no cabling budget, the battery lock is the shorter install.
6) What credentials does the Alarm Lock PDL3500CR accept, and can I require both a card and a PIN?
Two credential types: HID II proximity cards or fobs in the 26 to 37 bit format, and a 12 button metal keypad. It can be set to dual authentication, meaning the user presents a card and then enters a PIN before the lock releases, which is the setting facilities use on records rooms, pharmacies, and server closets. Card only or code only also work if you do not need the second factor. It holds 300 user codes and keeps an audit trail of who opened the door.
7) Is the Alarm Lock PDL3500CR Grade 1, and is it fire door rated?
Grade 1 is the rating: the Steelcase lock body meets BHMA specifications for Grade 1 locks. It is UL Listed to the 10C Positive Pressure Specification, FCC Certified, and the levers are ADA compliant. That combination is what a school or hospital spec normally calls for on a rated corridor or classroom door.
8) What is the closest alternative to the Alarm Lock PDL3500CR if I need a Grade 1 classroom mortise lock that reads cards instead of a keypad?
The TownSteel FME-2000 Series is a Grade 1 classroom mortise lockset with RFID technology, and it fits doors 1-3/4 inch thick. The PDL3500CR reaches the same openings a different way: it is a Grade 1 mortise lock in classroom function that accepts both a proximity card and a 12 metal button keypad code, over a door thickness range of 1-5/8 inch to 1-7/8 inch. If the credential program is card-only, the FME-2000 covers it; if a PIN has to work when someone forgets a badge, the PDL3500CR carries both readers in one body.
9) I need a classroom mortise lock but the room has no access control program and nobody to manage codes. What should I use instead of an electronic one?
The Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with an auxiliary deadlatch, and the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset in the ML2000 Series; both fit 1-3/4 inch doors and are keyed mechanical locks with no batteries or user codes to administer. The Alarm Lock PDL3500CR covers the same classroom function electronically, managing up to 300 user codes with an audit trail. Where the building has no one to own credential management, the mechanical NM8070 or ML2003 keeps the same function on a key.
10) Is the Schlage CO-100 mortise lock a substitute for the Alarm Lock PDL3500CR?
They are both Grade 1 standalone electronic mortise locks with a keypad, but they are not the same opening. The Schlage CO-100-MS-40-KP is a privacy function lock with a keypad reader for 1-3/4 inch doors. The Alarm Lock PDL3500CR is a classroom function lock that reads both a keypad code and a proximity card, over a 1-5/8 inch to 1-7/8 inch door thickness range. A privacy lock will not do what a classroom opening needs, so the two are not interchangeable even though both are Grade 1 electronic mortise bodies.
11) What should I use instead of the PDL3500CR if the lock has to be online with the access control system rather than standalone?
The Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating, and the BEST 45HW Series is a heavy duty wired electromechanical mortise lock running on 12V or 24V. The Alarm Lock PDL3500CR is a battery operated lock, powered by a 5AA battery pack rated to 75,000 cycles, holding its 300 user codes and audit trail in the lock itself. If credentials must be pushed from a head end or the door must be controlled remotely, the wireless LEMD-GRW or the wired 45HW is the right architecture.
12) We need lockdown from inside the classroom. Does the Alarm Lock PDL3500CR do that, or is there a better lock?
For an intruder function, the TownSteel FME-4000 Series is an electronic intruder classroom mortise lockset with RFID, Grade 1 and heavy duty for 1-3/4 inch doors, and the BEST 45HCA lockbody is a heavy duty mortise body with an intruder function. The Alarm Lock PDL3500CR is a classroom function lock: its classroom body uses a stainless steel latchbolt with 3/4 inch projection and a deadlocking latch, and the deadbolt version adds a 1 inch projection deadbolt. If the requirement is specifically inside lockdown, specify the FME-4000 or the 45HCA intruder body.
13) Is the Dormakaba Saffire LX-I-M002 an equivalent electronic mortise lock to the Alarm Lock PDL3500CR?
They differ on grade. The Dormakaba LX-I-M002 Saffire is an electronic RFID mortise lockset with BLE mobile access at BHMA Grade 2. The Alarm Lock PDL3500CR is Grade 1 and reads proximity cards plus a 12 button keypad code. Where a specification calls for Grade 1 mortise hardware, the Saffire will not satisfy it; where mobile phone credentials are the requirement, the Saffire carries BLE and the PDL3500CR does not.
14) Which lock should I specify instead of the PDL3500CR when the door has to unlock from a card reader system with request to exit signaling?
The Schlage L9092EU with 03A trim is an electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC operation, heavy duty for 1-3/4 inch doors in corridor function. The Command Access ML190 Series is a heavy-duty motorized mortise lock with field selectable EL/EU operation on 24VDC in storeroom function. The Alarm Lock PDL3500CR handles credentials in the lock itself, battery operated and standalone with its own audit trail, so it does not provide a request to exit output or accept an external unlock signal.
15) Can this electronic mortise lock go on an exterior door or an unheated building?
Yes. The PDL3500CR is a weatherproof lock rated to run from -31F to +151F, with an all metal keypad and a proximity antenna housing molded from impact resistant Lexan. That covers unheated warehouses, exterior perimeter doors, and gates in cold climates where a plastic keypad lock will not hold up. Most keypad mortise locks in this class are interior only, so this is the reason to pick it for an outside opening.
16) Should I use a keypad-and-prox mortise lock or a keyed classroom mortise lockset for a school?
A mechanical classroom lockset such as the Cal-Royal NM8070 or the Corbin Russwin ML2003, both Grade 1 classroom function, is the answer when the door just needs to be locked and unlocked by staff with a key and you do not care who opened it. The PDL3500CR earns its place when you need to change access without rekeying, revoke a credential from someone who left, or pull an audit trail after an incident. It manages 300 users on the lock itself, no software or panel required.
17) What are the alternatives to the PDL3500CR if my doors are 1-3/4 inch and I want a card-reading mortise lock?
Several Grade 1 electronic mortise locks are listed for 1-3/4 inch doors. The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID, and the FME-4000 is the intruder-function classroom version with RFID. Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating. Dormakaba E-Plex E5086 is a Grade 1 pushbutton and card mortise lock. The PDL3500CR itself covers 1-5/8 to 1-7/8 inch doors, so 1-3/4 inch falls inside its range too.
18) What does the classroom function on the PDL3500CR actually do at the door?
Classroom function means the outside lever is controlled by credential, with a stainless steel deadlocking latchbolt projecting 3/4 inch. The deadlocking latch resists a credit card or shim attack on the latch. There is also a deadbolt version that adds a 1 inch stainless deadbolt on top of the same 3/4 inch latchbolt, which is what you want on a door that gets locked down and left, rather than one cycled all day.
19) What comes in the box with the PDL3500CR and what do I still need to buy?
The lock ships with the 1-1/4 by 4-7/8 inch strike, a 1-3/8 inch mortise cylinder, and the 5 AA alkaline batteries. That is a complete opening for a door already mortise prepped at 2-3/4 inch backset. What you supply is the door prep itself if it is not already cut, and a replacement cylinder if you want the lock on your building keyway instead of the supplied one.
20) How does the Dormakaba E-Plex E5086 compare with the Alarm Lock PDL3500CR?
Both are Grade 1 electronic mortise locks that accept a card and a pushbutton code. The Dormakaba E-Plex E5086 is an entry/egress pushbutton and card mortise lock in a back to back configuration, meaning credentials are read on both sides of the door. The Alarm Lock PDL3500CR is a classroom function lock with a single 12 button metal keypad and proximity antenna, weatherproof and rated for outdoor as well as indoor use. Choose the E5086 when both faces of the door must be controlled, and the PDL3500CR when one controlled side is enough and the opening is exposed to weather.
21) If I only need keypad codes and no cards, what is a simpler electronic mortise lock than the PDL3500CR?
The BEST 45HZ EZ Series is an electronic keypad mortise lock with a key override function, and the Dormakaba E-Plex 2066 Series is an electronic pushbutton keyless mortise lock built for wide stile doors. Both work on codes alone. The Alarm Lock PDL3500CR carries a keypad plus a proximity reader and is set up for proximity card and pushbutton keypad access together, so its card side goes unused in a code-only program.
22) My doors are a full 1-3/4 inch and I want an electronic classroom mortise lock. Which one fits?
The TownSteel FME-2000 Series and FME-4000 Series are both Grade 1 heavy duty classroom mortise locksets with RFID technology listed for 1-3/4 inch doors, with the FME-4000 adding an electronic intruder classroom function. The Alarm Lock PDL3500CR covers a door thickness range of 1-5/8 inch to 1-7/8 inch, which includes 1-3/4 inch, so it fits that door as well while also taking thinner and thicker leaves. Measure the leaf first; if it falls outside 1-5/8 to 1-7/8, the TownSteel bodies are the ones spec'd to 1-3/4.
23) Can I use the Accentra nexTouch NTM623-NR in place of the Alarm Lock PDL3500CR?
The Accentra NTM623-NR is a Grade 1 nexTouch Generation 3 mortise lock with a capacitive touchscreen keypad, no deadbolt, and cylinder override. The Alarm Lock PDL3500CR uses a weatherproof all metal 12 button keypad and is rated to operate from -31 degrees F to +151 degrees F. On an exterior or unconditioned opening, that temperature range and the metal button keypad are the deciding difference; on a conditioned interior door where a touchscreen and key override are wanted, the NTM623-NR covers it.
24) The Codelocks CL2255 came up when I searched electronic mortise locks. Is it the same class of product as the PDL3500CR?
No. The Codelocks CL2255 is a medium duty electronic tubular mortise latch in a brushed steel finish. The Alarm Lock PDL3500CR is a Grade 1 commercial mortise lock, and its Steelcase lock body meets BHMA specifications for Grade 1, is UL Listed to the 10C Positive Pressure Specification, FCC certified, and supplied with ADA compliant levers. On a specified commercial or institutional opening the CL2255 does not carry those ratings; it suits lighter duty doors where a coded latch is all that is required.
25) We are standardizing a building on Grade 1 mortise hardware. What pairs with the Alarm Lock PDL3500CR on the non-classroom doors?
For the openings that do not need credentials, the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option, the NM8050 is a Grade 1 office/entrance lockset with auxiliary deadlatch, and the NM8440 is a Grade 1 privacy lockset with deadbolt, all for 1-3/4 inch doors. The Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever. The Alarm Lock PDL3500CR holds the same Grade 1 level on the classroom doors while adding proximity and keypad access with an audit trail.
26) Does the Schlage LEBMB-ADD mobile-enabled mortise lock meet the same spec as the Alarm Lock PDL3500CR?
Not on grade. The Schlage Electronics LEBMB-ADD is a Grade 2 mobile-enabled mortise lock with push button and LED, covering privacy, office and apartment functions on 1-3/4 inch doors, with a 3 hour fire rating. The Alarm Lock PDL3500CR is Grade 1 in classroom function with proximity card and keypad access. On a project written to Grade 1, the LEBMB-ADD is a substitution that would need approval; its functions also do not include classroom.
27) How many finishes does the Alarm Lock PDL3500CR come in?
Two: US26D satin chrome and US10B oil rubbed bronze, each available right hand or left hand. Satin chrome is the usual match for institutional openings running stainless or 626 hardware; oil rubbed bronze suits hospitality and residential-facing corridors. If you are standardizing a building on one look, those are the choices to plan around.
28) Is there an electronic mortise lock that does not need batteries changed like the Alarm Lock PDL3500CR?
The Dormakaba PowerPlex P2066 Series mortise lock is the self-powered option in this family of hardware. The Alarm Lock PDL3500CR runs on a 5AA battery pack rated for up to 75,000 cycles and is battery operated with no hardwired power required. On a door with very high traffic where battery replacement scheduling is the concern, look at the P2066; on doors where a battery change fits the normal maintenance round, the PDL3500CR needs no power run to the frame.
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Does the Alarm Lock PDL3500CRR/US26D come with a warranty?
Absolutely. The Alarm Lock PDL3500CRR/US26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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