Sargent 8271 Electromechanical...
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$2,351.33
$1,583.01
Sargent Sargent 8200 Series - (8271) Electromechanical Fail-Secure Function Rose Trim, Heavy Duty Single Cylinder Mortise Lock, Grade 1 SGT-8271

Sargent 8271 Electromechanical Fail-Secure Mortise Lock with EcoFlex Technology and Rose Trim

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Model: 8271 EA 26D
From the 8200 Series Collection
$2,351.33
$1,583.01
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$2,351.33
$1,583.01
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Sargent 8271 Electromechanical Mortise Lock with EcoFlex Technology 12-24VDC Fail-Secure

Grade 1 Heavy-Duty Mortise Lock with Advanced Power Management

The Sargent 8271 electromechanical fail-secure mortise lock delivers maximum security and performance with industry-leading durability. Operating from 12 to 24VDC with revolutionary EcoFlex technology that reduces power consumption up to 96%, this Grade 1 mortise lock features a 2 3/4" backset, 1 3/4" door thickness compatibility, and field-reversible handing. UL tested to 16 million cycles with comprehensive fire ratings up to 3 hours, this lock integrates with all SARGENT key systems including Degree, Signature, KESO, and XC.

Professional Features & Benefits

  • Door Compatibility: 2 3/4" backset with 1 3/4" door thickness compatibility for standard commercial door applications.
  • Exceptional Durability: UL tested to 16 million cycles (Verification ID: V584148) far exceeding industry standards for long-term reliability.
  • Advanced Power Management: EcoFlex technology reduces power consumption up to 96% while operating from 12 to 24VDC for flexible system integration.
  • Fail-Secure Operation: Electromechanical function provides secure locking during power loss for enhanced security applications.
  • Heavy-Duty Construction: Grade 1 mortise lock body with robust components engineered for demanding commercial environments.
  • Universal Key System Compatibility: Integrates with all SARGENT key systems including Degree, Signature, KESO, and XC for flexible access control.
  • Comprehensive Fire Rating: UL 10C fire-rated up to 3 hours with NFPA 80 compliance for life safety applications.
  • Manufacturer Warranty: 10-year limited warranty with 2-year coverage on electrical components for added confidence and protection.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm 12 to 24VDC voltage and current capacity before proceeding.
  2. Disconnect power supply before beginning installation. Follow all applicable electrical codes and safety procedures.
  3. Mount the unit in the specified location ensuring adequate clearance for wiring access, ventilation, and future service requirements.
  4. Route and connect wiring according to manufacturer wiring diagrams. Use appropriate wire gauge and connectors for the application.
  5. Configure operational settings including fail-secure operation per application requirements.
  6. Restore power and test all functions including normal operation, electromechanical function, and integration with connected systems.
  7. Complete final inspection and document settings. Refer to manufacturer documentation for complete wiring diagrams, programming instructions, and troubleshooting.

Professional Applications

  • Commercial Building Security Systems
  • Healthcare Facility Access Control
  • Educational Institution Safety Systems
  • Government and Municipal Buildings
  • Industrial Facility Monitoring
  • Multi-Tenant Residential Properties
  • Emergency Exit Compliance

Why Choose Sargent Quality?

Sargent mortise lock products deliver professional-grade reliability with heavy-duty construction tested to 16 million cycles and comprehensive certifications including UL 10C fire rating up to 3 hours. The 10-year limited warranty with 2-year electrical component coverage provides exceptional protection. Engineered for demanding commercial applications where dependable performance and advanced power management are essential.

Manufacturer Resources

SARGENT Full Line Catalog

Product Specs

Series:
8200 Series
Grade:
Grade 1
Keyed Function:
Single Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Subcategory:
Bored Locksets
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Electromechanical
Product Type:
Mortise Locks
Duty Level:
Heavy Duty
Handle Type:
Lever
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Electromechanical
Product Category:
Mechanical Locks
Collection:
8200 Series
Department:
Door Hardware

Sargent 8271 EA 26D – Frequently Asked Questions

1) What happens to the Sargent 8271 when the power goes out?
It stays locked. The 8271 is a fail-secure electromechanical function, so on a power loss the outside lever remains locked and the opening stays secure. Key override still works from the outside, and free egress from the inside is unaffected. If your life-safety plan requires the door to unlock on power failure, you need a fail-safe function instead, not this one.
2) Is the Sargent 8271 handed, or do I need to order left and right hand separately?
Handing is field-reversible on the 8271, so one lock covers both hands. You do not order a separate left and right hand part number, and a stocked spare can go on any opening in the building.
3) Can the Sargent 8271 go on a fire-rated door?
Yes. The 8271 mortise lock is UL 10C fire rated up to 3 hours and NFPA 80 compliant, so it can be specified on rated openings including 3-hour stair and corridor doors in healthcare and institutional buildings.
4) What do I have to specify when ordering a Sargent 8271 electrified mortise lock?
Five things are decisions on the order. Cylinder: standard cylinder, less cylinder, 70 prep for small format interchangeable core less core, or 60 prep for large format interchangeable core less core. Voltage: 12V or 24V. Keying: keyed different, keyed alike, or to a key code you supply (select none if you ordered less cylinder). Then finish, lever style and rose size. Monitoring is optional, either LX latchbolt monitor or RX request to exit.
5) Will the Sargent 8271 work with our existing Sargent key system?
It integrates with all SARGENT key systems, including Degree, Signature, KESO and XC. It is a single-cylinder keyed lock. If you run interchangeable core, order the 70 prep for small format or the 60 prep for large format and fit your own cores; if you are pinning it yourself into an existing system, order less cylinder.
6) What else could I use instead of the Sargent 8271 if we are not a Sargent keyway building?
Two close equivalents in wired electrified mortise. The BEST 45HW Series is a heavy duty wired electromechanical mortise lock running the same 12V/24V operation. The Schlage L9092EU with 03A trim is a 12/24VDC electric mortise lock, keyed outside, with request to exit built in and a 1-3/4 inch door thickness. The Command Access ML190 Series is the other route: a motorized 24VDC mortise lock with field selectable EL or EU operation, so one part covers fail-secure or fail-safe rather than committing at the order like the 8271 does.
7) Our doors are 1-5/8 to 1-7/8 inches thick. Is the Sargent 8271 still an option?
No, that is the wrong lock for those openings. The 8271 is set up for 1-3/4 inch doors. If your leaves run 1-5/8 to 1-7/8 inches, the Alarm Lock Trilogy DL2700CR and DL3500CR Grade 1 electronic mortise locks are both rated across that range in classroom function, and the DL4500 electronic mortise deadbolt covers it as well. For thicker doors up to 2-1/2 inches, Hager's 3800 Series mortise locks cover 1-3/4 to 2-1/2 inches, though those are mechanical, not electrified.
8) What is the closest equivalent to a Sargent 8271 electromechanical mortise lock from another manufacturer?
The BEST 45HW is the nearest wired equivalent - it is a heavy duty wired electromechanical mortise lock running on 12V or 24V, the same voltage range the Sargent 8271 operates on. The Schlage 03A electric lock/unlock outside lever mortise lock is another wired peer, listed as heavy duty for 1-3/4 inch doors with a keyed outside lever and request-to-exit switching at 12/24VDC. All three are wired mortise locks driven from a building power supply rather than battery or standalone keypad devices, so the access control panel, transformer and door cord already specified for one will carry over to the others.
9) What electrified mortise lock should I use if I need fail-safe instead of fail-secure?
The Sargent 8271 is a fail-secure electromechanical function, so it stays locked on the secure side when power drops. If the opening needs the other behavior, or you want the choice made in the field, the Command Access ML190 is a motorized mortise lock with field selectable EL/EU operation on 24VDC in a storeroom function, heavy-duty. Field selectable means the same lock body can be set either way at install, which suits stair towers and other openings where the fire and life safety review may change the requirement after the hardware is on site.
10) If I do not want to run wire to the door, what mortise lock can I use instead of an electrified one?
A wired lock like the Sargent 8271 needs a power supply and a door cord or transfer hinge to the frame. Where pulling wire is not practical, standalone and wireless mortise locks handle credentials at the door: the Alarm Lock DL3500CR is a Grade 1 electronic mortise lock with 300 user codes in a classroom function for 1-5/8 to 1-7/8 inch doors, the Schlage CO-100 is a Grade 1 heavy duty standalone electronic mortise lock with a keypad reader in a privacy function for 1-3/4 inch doors, and the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating. Confirm the door thickness against the one you have before you commit - the Alarm Lock range and the Schlage range are not the same.
11) Will a Grade 2 electronic mortise lock work in place of the Sargent 8271?
Not where the specification calls for Grade 1. The Sargent 8271 is Grade 1 heavy duty. The Schlage LEBMB-ADD mobile-enabled mortise lock is Grade 2, for 1-3/4 inch doors with a 3 hour fire rating and privacy, office and apartment functions, and the Dormakaba Saffire LX-I-M002 electronic RFID mortise lockset with BLE mobile access is BHMA Grade 2. Both are mortise locks and both mount in a mortise pocket, but if the door schedule reads Grade 1 they will not satisfy it. For a Grade 1 electronic peer, the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors.
12) Which mortise locks look like substitutes for a Sargent 8271 but will not work on the same opening?
Several mortise-labelled products serve a different purpose. The Kaba Ilco 185 Series is a deadbolt function mortise lock with no handing, and the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt - a deadbolt throws no latch, so neither replaces a latching lockset on a corridor door. The Schlage L0170 and the Falcon MESC600DT are dummy trim, with no lock mechanism at all. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan mortise entrance locksets are also dummy function. And the Alarm Lock DL1300NW Trilogy Networx wireless lock is built for Adams Rite deadlatches in narrow stile aluminum, not a mortise pocket in a 1-3/4 inch commercial door.
13) Do I need the LX or the RX option on a Sargent 8271?
They answer different questions in the access control head end. LX is a latchbolt monitor, so it reports whether the latch has actually thrown into the strike, which is what you want for a secure-door status point. RX is request to exit, which signals the panel that someone operated the inside lever so the alarm does not trip on legitimate egress. Panic-hardware-free corridor and stair doors on a monitored system usually take RX; doors where you need positive latch confirmation take LX. Both are optional add-ons, not standard.
14) Which rose size should I pick to cover the old prep on the door?
Four rose sizes are offered on the 8271: LN rose at 2 inches (51mm), O rose at 2-3/4 inches (67mm), E rose at 3-1/16 inches (78mm) and L rose at 3-1/2 inches (89mm). If you are replacing lever trim and want to hide the existing marks and holes in the door face, the L rose at 3-1/2 inches gives you the most coverage. Lever style is a separate choice, with A, B, E, F, J, L, P and W available.
15) How durable is the Sargent 8271 for a high-traffic entrance?
It is a Grade 1 heavy duty lock body tested by UL to 16 million cycles, verification ID V584148. For a main entrance, a busy corridor or a dorm door taking thousands of operations a week, that cycle count is well past what Grade 1 requires.
16) Should I use a wired electrified mortise lock like the 8271 or a standalone keypad lock?
The 8271 is wired: it needs 12 to 24VDC run to the door and a credential reader or panel to control it, and in return it ties into the building access control system with real-time control and, with LX or RX, real-time monitoring. A standalone battery unit like the Dormakaba E-Plex 2066 pushbutton mortise lock or the BEST 45HZ EZ Series keypad mortise lock with key override needs no wiring or panel, but each door is programmed at the door. Wire the openings you need to audit and remotely lock down; use standalone on the outbuildings and low-traffic doors where pulling power is not worth it.
17) We need card reader access on classroom doors. Is a wired 8271 the right choice or should we look at an RFID lockset?
Depends on whether you already have panels and wire at those doors. The 8271 is a wired fail-secure mortise lock that a card reader and access panel control, which is the right build when the classrooms are on an existing system. If they are not, an integrated RFID lockset puts the reader in the lock: the TownSteel FME-2000 Series is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors, and the FME-4000 Series adds intruder classroom function for lockdown from inside the room. Both avoid running power to every opening.
18) Can I put the Sargent 8271 in a door that is prepped for a cylindrical lock?
No. The 8271 is a mortise lock, which needs a rectangular pocket machined into the edge of the door plus the faceplate and trim preps. A door bored for a cylindrical lock has a round cross-bore and no pocket, so it has to be re-prepped or replaced. If you need to stay in the existing bored prep on a non-keyed opening, a cylindrical unit like the Schlage PC10 Grade 1 passage lock is the type that drops in there instead.
19) Can I use a Sargent 8271 on a door thinner than 1-3/4 inch?
The Sargent 8271 is built for 1-3/4 inch door thickness. On thinner doors, the Alarm Lock DL2700CR and DL3500CR cover 1-5/8 to 1-7/8 inch, and the Baldwin 6310 entry/storeroom mortise lock body is stated for 1-3/8 inch and over on a 2-1/2 inch backset. For ornamental iron and other thin stile doors, the Marks USA 21AC and 22AC entrance double cylinder ornamental iron mortise locks are stated for 1 inch. Backset differs across these - the Sargent 8271 is a 2-3/4 inch backset - so the mortise pocket and face prep will not interchange.
20) I do not need access control on this door - what mechanical mortise lock covers the same opening?
Where the opening does not need to be released electrically, a keyed mechanical mortise lock does the same job without a power supply. In Grade 1 storeroom function the Accentra 8805FL comes with an Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 storeroom lockset with an interchangeable core option for 1-3/4 inch doors. For a classroom function, the Corbin Russwin ML2003 is a Grade 1 classroom mortise lockset for 1-3/4 inch doors and the Cal-Royal NM8070 is a Grade 1 classroom lockset with an auxiliary deadlatch. All are Grade 1, matching the grade of the Sargent 8271, so the security level of the opening does not change - only the way it is released.
21) What is the difference between the Sargent 8271 and the BEST 45HW wired mortise lock?
Both are heavy duty wired mortise locks operating at 12V or 24V. The Sargent 8271 is specifically the fail-secure function with rose trim, keyed single cylinder, Grade 1, and carries EcoFlex power management that cuts consumption up to 96 percent along with a UL test to 16 million cycles. The BEST 45HW is described by its series as a wired electromechanical mortise, heavy duty, without a function stated in the same place. The practical decision point is the key system: the 8271 works with SARGENT Degree, Signature, KESO and XC cylinders, so a facility already keyed into a SARGENT system keeps its keyway.
22) What should I put on a behavioral health or detention door instead of a standard electrified mortise lock?
A lever-and-rose electrified lock like the Sargent 8271 presents a ligature point. For those openings the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel, and TownSteel offers the MRX-A-01 with anti-ligature arch trim and the MRX-L-01 with an anti-ligature lever, both Grade 1 heavy duty passage function for 1-3/4 inch doors in stainless steel. Note these are passage function, so a door that must also lock will need the lock function handled by other hardware.
23) Which mortise lock takes escutcheon trim instead of a rose?
The Sargent 8271 uses rose trim, available in E rose at 3-1/16 inch, L rose at 3-1/2 inch, LN rose at 2 inch and O rose at 2-3/4 inch. If the opening needs a full escutcheon plate to cover an existing prep or match adjacent doors, the Hager 3810E is a Grade 1 passage mortise lock with escutcheon on a 2-3/4 inch backset for 1-3/4 to 2-1/2 inch doors, and the Hager 3850E is a Grade 1 non-keyed office mortise lock with lever and escutcheon on the same 2-3/4 inch backset. Hager also lists the 3810S in the rose version if you want the two trims from one series across a floor.
24) What is a simpler alternative to an electrified mortise lock for a door that only needs to latch?
An electrified lock like the Sargent 8271 is keyed and driven from a power supply. Where the door only needs to latch and stay closed, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors. If the door is not already prepped for a mortise pocket, the Schlage PC10 is a Grade 1 passage cylindrical lock with rose for 1-3/4 inch doors, which takes a bored prep instead.
25) How does a battery or self-powered mortise lock compare with a wired one like the Sargent 8271?
The Sargent 8271 draws 12 to 24VDC from building power, with EcoFlex technology cutting consumption up to 96 percent so a single supply carries more openings. Dormakaba offers two alternatives that avoid the power run: the E-Plex 2066 is an electronic pushbutton keyless mortise lock for wide stile doors, and the PowerPlex P2066 is a mortise lock in the PowerPlex 2000 Series. The BEST 45HZ EZ Series is an electronic keypad mortise lock with key override. The trade is central control - a wired lock reports to and is released by the access control system, while pushbutton locks are managed at the door.
26) What mortise lock supports card or credential readers at the door if I am not running a wired access control panel?
The Sargent 8271 is released by a signal on 12 to 24VDC from a panel. Credential-reading alternatives that live at the door include the Dormakaba E-Plex E5086, a Grade 1 entry/egress electronic pushbutton and card lock in a back to back mortise configuration, the Accentra NTM623-NR nexTouch Generation 3 mortise lock with a capacitive touchscreen keypad and cylinder override with no deadbolt, and the Schlage LEMD-GRW ENGAGE wireless mortise lock with a 125kHz proximity reader and 3 hour fire rating. Back to back means readers on both faces, which suits an opening that has to be controlled in both directions.
27) Do I need the whole electrified lockset, or can I order just a mortise lock body?
The Sargent 8271 is supplied as an electromechanical lockset with lever and rose trim, in eight lever designs from A through W and sixteen finishes. When the existing trim is staying and only the lock body is being changed out, BEST lists the 45H heavy duty mortise lock body in a public entrance function with field reversible operation, and the 45HCA heavy duty mortise lockbody in an intruder function. Baldwin's 6301 is an entry/apartment mortise lock body on a 2-1/2 inch backset, offered knob by knob or lever by lever for 1-3/4 inch and over. Confirm the existing trim mounts to the replacement body before ordering a body alone.
28) Is a medium duty mortise latch an acceptable substitute on a high traffic commercial door?
The Sargent 8271 is Grade 1 heavy duty commercial and UL tested to 16 million cycles. The Codelocks CL2255 electronic tubular mortise latch in brushed steel is listed as medium duty in the CL2000 Series - it is a mortise latch rather than a heavy duty lock body, so it belongs on lighter traffic interior openings rather than a main entrance or a corridor cycling all day. For high cycle openings, stay with the Grade 1 heavy duty peers such as the BEST 45HW wired mortise or the Cal-Royal NM8050 Grade 1 office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors.
29) What locks a glass entrance door if a mortise lockset will not fit the stile?
A commercial mortise lockset such as the Sargent 8271 needs a 1-3/4 inch door with a mortise pocket, which a glass door does not have. The Kaba Ilco BR Series is a glass door bottom rail lock, made to lock into the rail of a glass entrance instead. The Alarm Lock DL1300NW Trilogy Networx wireless electronic lock with keypad is built for Adams Rite deadlatches, which is the prep found in narrow stile aluminum storefront.
30) What mortise lock gives privacy on a restroom or patient room instead of a keyed electrified lock?
The Sargent 8271 is keyed with a single cylinder, which is not what a privacy opening wants. For privacy function, the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, the Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset for 1-3/4 to 2 inch doors, and the Schlage CO-100 covers privacy electronically as a Grade 1 heavy duty standalone mortise lock with keypad reader for 1-3/4 inch doors.
31) What finishes does the Sargent 8271 come in to match the rest of our building?
Sixteen finishes are offered: 03 bright brass, 04 satin brass, 09 bright bronze, 10 satin bronze, 10B dark oxidized satin bronze oil rubbed, 10BE dark oxidized satin bronze, 10BL dark oxidized satin bronze clear coated, 14 bright nickel, 15 satin nickel, 20D dark statuary bronze lacquered, 26 bright chrome, 26D satin chrome, 32 bright stainless, 32D satin stainless, plus BSP black suede and WSP white suede powder coat. 26D and 32D are the two that most commercial buildings are already standardized on.
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Does the Sargent 8271 EA 26D come with a warranty?
Absolutely. The Sargent 8271 EA 26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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