Product Overview
Falcon TM581B Extra Heavy-Duty Grade-1 Electrified Storeroom Cylindrical Lock, Electrically Unlocked (EU- Fail Secure), SFIC Small Format Interchangeable Core Prep, Less Core, 2-3/4" Backset, ASA Strike
Ideal for commercial and institutional facilities, TM offers a published 2.5 million cycle life, Pressure Release clutching lever protection with free‑wheeling operation under abusive loads (tested to 2,100 in‑lbs), and stainless‑steel latch construction to enhance security and longevity at high‑use openings.
Storeroom lock (electrified-fail secure) – Latch bolt retracted by outside lever when
outside lever is electrically unlocked (EU). Latch bolt retracted by key in outside when outside lever is locked. Outside lever clutches when locked. Inside lever always unlocked for immediate egress. Deadlocking latch bolt. Unlocked by 12 or 24 VDC continuous duty.
Interchangeable core users can enjoy the convenience of fast rekeying without having to disassemble the lock. This feature is very useful in applications where a high frequency of core changes are needed.
- Core sold separately
- Input voltage: Autodetecting 12‑24V DC, +/‑ 10%
- Peak Current: 0.24 amps (240mA)
- Holding Current: 0.01 amps (10mA)
- Operating Temperature: 32°F to 120°F (0°C to 49°C)
- Certified ANSI/BHMA A156.2, Series 4000, Grade 1
- Complies with ICC A117.1 Accessible and Usable Buildings and Facilities
- UL 10C and CAN/ULC‑S104 listed 3‑hour fire door
- All levers with a return to door of 1/2" (13 mm) or less comply (Boardwalk, Dane, Longitude and Quantum)
- Complies with Florida Building Code requirements for hurricanes
- Meets FF‑H‑106C Series 161
- Limited warranty, 10 years from date of manufacturer

| Brand | |
|---|---|
| Finishes |
605 Bright Brass, 606 Satin Brass, 613 Oil Rubbed Bronze, 619 Satin Nickel, 622 Matte Black, 625 Bright Chrome, 626 Satin Chrome, 643e Aged Bronze |
| ANSI/BHMA Standard |
Certified ANSI/BHMA A156.2, Series 4000, Grade 1 |
| Usage |
Heavy Duty |
| Lock Function |
Electrified Storeroom, Electrically Unlocked |
| Cylinder Format |
Small Format Interchangeable Core (SFIC) |
| Cylinder |
B - SFIC Prep, Less Core |
| Lever Design |
DAN (Dane), AVA (Avalon), BRK (Boardwalk), BRW (Broadway), LAT (Latitude), LON (Longitude), QUA (Quantum) |
| Backset |
2-3/4" |
| Latch |
Square corner 1‑1/8" x 2‑1/4" (29 mm x 57 mm) - 1" (25mm) housing diameter, 1/2" (13 mm) throw, restoring spring latch or deadlatch with retained screws; stainless steel |
| Strike |
Standard: ANSI curved lip: 1‑1/4" x 4‑7/8" x 1‑3/16" (32 mm x 124 mm x 30 mm) with retained screws |
| Door Thickness |
Standard (134): Fits doors 1‑3/8" (35 mm) to 1‑3/4" (44 mm) without adjustment |
| Handing |
Non-Handed |
| Fire-Rating |
UL 10C and CAN/ULC‑S104 listed 3‑hour fire door ‑ A label single doors, 4' x 10' and pairs 8' x 10' ‑ Letter F and UL symbol on latch front indicate listing |
| ADA Compliance |
Complies with ICC A117.1 Accessible and Usable Buildings and Facilities |
| Warranty |
Limited warranty, 10 years from date of manufacturer |