4501 Onboard Delayed Egress

4501 OBDE
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  • Built-in function key switch provides alarm and lock reset. 1 to 30 second bypass, sustained bypass and additional key switch
  • Control inputs include 1 to 30 second request to exit and access bypass with anti-tailgate and alarm rest
  • Field selectable automatic or manual power up after emergency release or power loss
Alarm Timing

15 (or optional 30) second egress delay

  • Airport & Public Facility Security and Safety
  • Loss Prevention
  • Restrict the egress of wandering patients for safety
  • Restrict the egress of commercial center patrons for security
  • ANSI/BHMA A156.3-2014 Grade 1
  • UL305 Listed for Panic Hardware
  • UL/cUL Listed for up to 3 hours for "A" labeled doors
  • UL10C Positive Pressure Rated
  • UL10B Neutral Pressure Rated
  • Complies with ANSI 117.1 for accessible buildings and facilities
Code Compliance
  • IFC International
  • IBC International Building Code
  • NFPA 101 Life Safety Code
  • NFPA 1 Uniform Fire Code
  • California Building Code

Stainless steel, zinc

Cover Tube

Requires a 3902 mortise cylinder with standard cam, sold separately

Electric Modifications

OBDE - Onboard Delayed Egress

Electrical Specifications
  • DE; 540mA @ 24VDC signal; 790mA @24VDC Tandem
  • Reset/RX Input: N/O, Dry contact
  • bypass Input: N/O, Dry contact
  • DPS Input: N/O, Dry contact
End Caps


  • Wood and machine screws
  • Thru-bolts
  • Rod covers by others recommended for SVR/LBR Applications
  • Recommended to be used on appropriately reinforced doors
  • Onboard delayed egress cover plate is only available in stainless steel (US32D) finish
Operational Functionality
  • Typically used on exit doors when unauthorized egress is initiated when in the locked mode. The door unlocks after 15 seconds permitting egress
  • SVR exits must include rod covers
  • Door position switch (DPS) is recommended
  • Secure / Unsecure status
  • Egress initiation status
  • Released / Bypass status
  • Alarm Relay 1A @30VDC SPDT, Dry
  • Door security relay 1A@30VDC SPDT, Dry
Product Description

Available for all 4500 series devices

Product Number
4501 OBDE
Push Bar
OPTIONAL: Photoluminescent push bar cover available
  • Escutcheon trim
  • Pull plate trim
  • One year on electrified, components
  • Lifetime on hardware components
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