Cylindrical Locks - Classroom Intruder with LED Indicator | PDQ GT 135 LED

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5.90 LBS
Width x Height x Depth:
7.60 (in)


5.40 (in)


3.90 (in)

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Cylindrical Locks - Classroom Intruder  with LED Indicator | PDQ GT 135 LED

Easy-to-Read LED Indicator Confirms the Door is Locked. GT135 LED Classroom Intruder Cylindrical Lock is designed to allow a staff member to use the inside cylinder to lock the outside of the door, without compromising safety to the occupants in the room. But how does a staff member know if the outside lever is locked? Until now, it required opening the door and checking the lever. PDQ’s 135 LED Classroom Intruder function eliminates the need to open the door. Simply press the button on the lock, and…if the Red LED lights up, the outside lever is locked and secure. If the Red LED does not light up, this indicates the outside lever is not locked and secure.


• Complies with California Education Code

• Red LED (Light Emitting Diode) outside lever status indicator.

• Pushing the button located on the rose of the inside lock, Red LED illuminates indicating the outside lever is locked.

• Offered with cylinder housings compatible with Best® Small Format Inter-changeable cores, Schlage® Large Format Interchangeable cores and most others.

• Large Format Inter-changeable cores only available with PHL lever.

• Keying options available, compatible with most key systems.

• Battery life rating: 10 years*

• Battery type: CR1220

• Patented (US Patent #9,187,928)

• Factory tested to over 2 million cycles (2 times the ANSI/BHMA Grade 1 std)

• Lever torque tested to 2,100 in-lbs (3 times the ANSI/BHMA Grade 1 std)


FOR DOORS: 1-3/4" to 2-1/4" thick
Preset for 1-3/4" door
APPLICATION: Through door thru-bolting
DOOR PREP: Standard ANSI A156.115 (161) for Cylindrical Locks
BACKSET: 2-3/4” Standard. 2-3/8”, 3-3/4” and 5” Optional (Call us for more detail).
CHASSIS: Heavy duty zinc diecast, investment cast, chromated cold rolled steel, stainless steel and EZAC™ diecast mechanism. Billet Steel spindles for locking functions
FRONT: 2-1/4” x 1-1/8”
Stainless Steel or Wrought Brass
Beveled 1/8” in 2”
STRIKE: ASA standard
T-Strike or Full Lip Strike optional
Stainless Steel or Wrought Brass
LEVERS: Philadelphia, Boston, Miami
ROSE: 3-3/8” DIA Wrought
LATCHBOLT: 9/16” Throw Deadlocking
3/4” Latch projection for available as option
HAND: Non-handed
TRIM: Solid Zinc diecast PHL, BSN or MIA Levers
41° Lever Rotation Standard with 2-3/4” Backset
Wrought Brass Roses, Concealed Screws
65° Lever Rotation Standard with 3/4” latch for double doors (Ordered from factory only) and all 2-3/8”, 3-3/4” and 5” Backsets (Call us for more details)
KEYS: Two (2) per lock
KEYWAYS: SCC standard (Schlage C Compatible)
Also available in keyways of other manufacturers
INTERCHANGEABLE CORE: Available for all keyed functions
6 or 7-pin
Large Format IC Core available for PHL Lever ONLY.
Compatible with Best, Falcon and Arrow.
CYLINDER: 6-pin Brass Insert Cylinder keyed to 5-pins
Standard High Security and UL437 Cylinders Available
KEYING: Options: MK, CMK or GMK
Zero Bitted (KO), Keyed Different (KD) or Keyed Alike (KA) Can be keyed into existing master key systems
FINISHES: 605 (US3), 606 (US4), 612 (US10), 613 (US10B), 625 (US26), 626 (US26D)
Optional Antimicrobial Coating 626 (USD26D) only

PDQ GT135LED School Lockdown Lock Finishes
Click here for our Definitive List of Door Hardware Finishes

CERTIFICATIONS, COMPLIANCES, LISTINGS: UL listed for 3 hrs, for single doors up to 4’0” x 8’0”
Certified to ANSI/BHMA A156.2, Grade 1
California Education Code Compliant (Functions GT135, GT135LED, GT145)
Federal Specification FF-H-10C (Superseded by A156.2)
Approved for Florida HVHZ (High Velocity Hurricane Zone). PDQ Product Approval: FL 21376.
Design load rating: ± 70.0 PSF for single door (3’ x 7’)
Complies with ADA (Americans with Disabilities Act) and ICC/ANSI 117.1 for Accessible and Usable Buildings
WARRANTY: Twenty-five (25) year Limited Warranty
COUNTRY OF ORIGIN: Proudly Assembled in the U.S.A. with U.S. and foreign material. Meets requirements of the Buy American Act.




Vestibule Class Room Security


• Latchbolt operated by lever from either side

• Key in either lever locks outside lever

• Key in either lever unlocks outside lever

• Inside lever always free

• Red LED Outside Lever Status Indicator

• Lock Directional Arrow

• Patent # 9,187,928



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