BEST LSM308 Electric Mortise L...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,625.04
BEST LSM308 Electric Mortise Lock with Latchbolt Monitor Switch - 08 Function

BEST LSM308 Electric Mortise Lock with Latchbolt Monitor Switch - 08 Function

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Model: LSM308 626 RHR
$1,625.04
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,625.04
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BEST LSM308 Electric Mortise Lock with Latchbolt Monitor Switch - 08 Function

Professional Electric Mortise Lock with Precision Monitoring

The BEST LSM308 Electric Mortise Lock delivers professional-grade security with integrated latchbolt and trim monitoring capabilities. This precision electric mortise lock features 08 function operation with SPDT switch technology rated to 2 Amps at 24VDC. Designed for commercial applications requiring reliable lock status monitoring, the LSM308 provides handed operation for versatile installation requirements.

Professional Features & Benefits

  • Dual Monitoring Capability: Monitors both latchbolt and trim locked or unlocked status for comprehensive security oversight.
  • Precision Electrical Rating: SPDT switch rated to 2 Amps at 24VDC for reliable integration with access control systems.
  • 08 Function Operation: Engineered with 08 function specification for specific commercial lock applications.
  • Handed Configuration: Available in handed versions (LSM308 and LSM308F) to accommodate various door configurations.
  • Electric Mortise Design: Professional mortise body construction for secure integration into commercial door frames.
  • Commercial-Grade Construction: Built to withstand demanding commercial environments with reliable long-term performance.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Lock Type: Electric Mortise
  • Product Category: Mechanical Locks
  • Product Group: Mechanical Locks
  • Product Subgroup: Mortise Locks and Trim
  • Product Type: Mortise Locks
  • Series: LSM308
  • Subcategory: Electric Mortise

Installation & Operation

  1. Verify electrical requirements match available power supply. Confirm 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 any configurable options per application requirements.
  6. Restore power and test all functions including normal operation, monitoring functions, 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 Commercial Properties
  • Emergency Exit Compliance Monitoring

Why Choose BEST Quality?

BEST electric mortise locks deliver professional-grade reliability with precision SPDT switch technology rated to 2 Amps at 24VDC. The LSM308 series provides comprehensive latchbolt and trim monitoring capabilities essential for demanding commercial security applications. Engineered for dependable performance where accurate lock status monitoring is critical.

Manufacturer Resources

Precision 2000 Series Catalog

Product Specs

Series:
LSM308
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Electric Mortise
Commercial/Residential:
Commercial
Lock Type:
Electric Mortise
Product Category:
Mechanical Locks
Department:
Door Hardware

BEST LSM308 626 RHR – Frequently Asked Questions

1) What does the BEST LSM308 mortise lock actually monitor, and how does it report to an access control panel?
The LSM308 is an electric mortise lock that monitors both latchbolt position and whether the trim is locked or unlocked. It reports through an SPDT switch rated to 2 Amps at 24VDC, so it wires as a dry contact into an access control or alarm panel. That gives you door-secure status and trim status from the lock body itself rather than relying on a separate door position switch.
2) Is the BEST LSM308 handed, or can I field-reverse it on site?
Handing has to be specified at order. The LSM308 is a handed lock, offered as Left Hand Reverse or Right Hand Reverse only. There is no field-reversible option here, so determine the hand at the opening before you order. If you need a mortise lock you can flip on site, the Falcon MA101 passage lock is field reversible.
3) Do I have to order a fire rated version of the LSM308 latchbolt monitor switch?
The latchbolt monitor switch is an ordering choice: Standard or Fire Rated. If the lock is going into a labeled fire door assembly, pick the Fire Rated switch option at order time. It is a build option on the lock, not something you swap in later without pulling the lock body.
4) What is the closest alternative to a BEST LSM308 electric mortise lock if I need electrified lever control on a 24VDC access control circuit?
The Schlage L9092EU with 03A trim is the nearest peer for that job. It is an electric lock/unlock outside lever mortise lock, keyed outside, with request to exit (RX) and 12/24VDC operation, heavy duty, for 1-3/4 inch doors. The difference is what the electrics do: the LSM308 is an electric mortise lock whose SPDT switch, rated to 2 Amps at 24VDC, monitors latchbolt and trim locked/unlocked status, while the Schlage electrifies the outside lever itself for lock/unlock control. If the panel needs to actively lock and unlock the opening, the L9092EU is the fit; if it needs to know the bolt and trim status, the LSM308 is.
5) Is there an electrified mortise lock that can be switched between fail safe and fail secure in the field instead of the BEST LSM308?
The Command Access ML190 series motorized mortise lock is the one to look at for that. It is a heavy-duty storeroom function motorized mortise lock with field selectable EL/EU operation and 24VDC power, so the fail safe or fail secure behavior is set at install rather than ordered in. The BEST LSM308 is an electric mortise lock built around an 08 function body with a latchbolt and trim monitor switch, SPDT rated to 2 Amps at 24VDC, and is ordered handed as Left Hand Reverse or Right Hand Reverse. Both run on 24VDC, so the same power supply serves either.
6) We do not have power or wire at the door. What mortise lock should we use instead of the BEST LSM308?
A standalone electronic mortise lock removes the wiring run. The Alarm Lock DL3500CR Trilogy is a Grade 1 electronic mortise lock with classroom function and 300 user codes for 1-5/8 inch to 1-7/8 inch doors, and the Alarm Lock DL2700CR Trilogy T2 is a Grade 1 classroom electronic mortise lock with a weatherproof design for the same door thickness range. Both operate from the keypad at the door. The BEST LSM308 is an electric mortise lock intended for a wired system, with an SPDT switch rated to 2 Amps at 24VDC reporting latchbolt and trim status back to the panel, so it assumes power and a monitored circuit at the opening.
7) I need a fire rated mortise lock for a labeled opening. Does the BEST LSM308 cover it, or should I look at something else?
The BEST LSM308 is ordered with the latchbolt monitor switch in either a Fire Rated or a Standard configuration, so the fire rated version is the one to specify for a labeled opening. Among peers, the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock carrying a fire rating with field reversible operation, and the Schlage Electronics LEMD-GRW is a Grade 1 wireless mortise lock with a 3 hour fire rating. Those two are non-electrified-monitoring and wireless-credential products respectively, so pick by what the door has to do besides hold a label.
8) What power supply do I need for the BEST LSM308 electric mortise lock?
Plan for 24VDC. The monitor switch is an SPDT contact rated to 2 Amps at 24VDC, so the circuit it switches must stay within that. Confirm voltage and current capacity against the panel or power supply before you wire it, and pull power down before you make the connections.
9) What finishes does the BEST LSM308 come in so I can match the rest of my openings?
Thirteen BHMA finishes: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 satin bronze oil-rubbed, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless, 630 satin stainless, and 690 statuary dark bronze. For a commercial building standardized on 626 satin chrome or 630 satin stainless, both are in the range.
10) Can I get request-to-exit signalling instead of latchbolt monitoring from this BEST lock?
The LSM308 gives you latchbolt and trim status through its SPDT contact, which is what most panels use to confirm the door is secure. If your spec specifically calls for a request-to-exit switch signalling lever movement, the Schlage L9092EU mortise lock is supplied with RX and runs on 12/24VDC. Read the drawing carefully, monitoring and RX are often both listed and they are not the same switch.
11) What is the difference between the LSM308 and LSM308F?
They are the two handed builds of the same 08 function electric mortise lock, ordered as Left Hand Reverse or Right Hand Reverse. Function, the SPDT monitor switch and the finish range are the same across both. The one you need is decided by the swing and the side the trim sits on at your opening.
12) I need a keypad or card reader on the door, will this BEST mortise lock do that?
No. The LSM308 is a monitored electric mortise lock body, not a standalone credential lock, there is no keypad or reader on it. For keypad or RFID at the door, the comparable options include the Alarm Lock DL3500CR Trilogy classroom lock with 300 user codes, the Dormakaba E-Plex 2066 pushbutton keyless mortise lock, or the TownSteel FME-2000 Grade 1 RFID mortise lockset.
13) If the opening only needs a keyed mortise lock and no electrical monitoring, what replaces the BEST LSM308?
Go to a mechanical mortise lockset. The Accentra 8805FL is a Grade 1 storeroom mortise lock with Arcadia lever in the 8800 series, the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors, and the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset for 1-3/4 inch doors. None of those carry switches. The BEST LSM308 exists specifically to report status: its SPDT switch, rated to 2 Amps at 24VDC, monitors both latchbolt and trim locked or unlocked condition. If nothing is watching the door, that capability is unused.
14) Does a Schlage CO-100 mortise lock do the same thing as a BEST LSM308?
No, and they are not interchangeable on a monitored opening. The Schlage CO-100-MS-40-KP is a standalone electronic mortise lock with a keypad reader, privacy function, Grade 1, heavy duty, for 1-3/4 inch doors — credential decisions are made at the lock itself. The BEST LSM308 has no reader; it is an electric mortise lock with an 08 function body whose SPDT switch, rated to 2 Amps at 24VDC, feeds latchbolt and trim status to an access control or monitoring system. Choose the CO-100 when the door needs its own credential control, the LSM308 when a head-end system needs to see door status.
15) What are the wireless alternatives to a BEST LSM308 for reporting door status back to a system?
Two wireless mortise locks cover that ground. The Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE series wireless mortise lock with a 125kHz proximity reader, mobile-enabled deadbolt with LED and Greenwich trim, right hand, with a 3 hour fire rating. The Alarm Lock DL1300NW Trilogy Networx is a wireless electronic mortise lock with keypad, built for Adams Rite deadlatches. Both carry their own radio back to the system. The BEST LSM308 is a hardwired electric mortise lock; its SPDT switch is rated to 2 Amps at 24VDC and reports latchbolt and trim status over conductors, which is the route to take when the integrator wants a dry contact rather than a network device.
16) Can I use a Sargent 4874 mortise deadbolt where a BEST LSM308 is specified?
Only if the drawing calls for deadbolt security with no monitoring. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset in the 4870 series — a bolt and nothing more. The BEST LSM308 is an electric mortise lock with an 08 function body and an SPDT switch rated to 2 Amps at 24VDC that monitors latchbolt and trim locked or unlocked status, ordered handed and in a fire rated or standard switch configuration. A deadbolt substitution gives up the status reporting the LSM308 was chosen for.
17) What should I spec instead of a BEST LSM308 on a behavioral health or ligature resistant opening?
Look at the TownSteel MRX series or the Marks USA hospital paddleset. The TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with passage function for 1-3/4 inch doors, and the MRX-A-01 is the same passage function in a satin stainless ligature resistant arch trim. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset, ligature resistant and ADA compliant in satin stainless steel. These are mechanical trims shaped for the environment; the BEST LSM308 is an electric mortise lock with a latchbolt and trim monitor switch rated to 2 Amps at 24VDC and conventional lever trim.
18) My door is an aluminum storefront. Will a BEST LSM308 work, or do I need a different lock?
Narrow aluminum stiles generally need hardware built for them. The Dormakaba E-Plex 2066 electronic pushbutton keyless mortise lock is listed for wide stile, and the Alarm Lock DL1300NW Trilogy Networx wireless electronic mortise lock is made for Adams Rite deadlatches, which is the usual storefront prep. For glass doors with a bottom rail, the Kaba Ilco BR series is a glass door bottom rail lock. The BEST LSM308 is a commercial electric mortise lock with a 2 Amp at 24VDC SPDT latchbolt and trim monitor switch and conventional mortise body, so confirm the stile can take a standard mortise pocket before specifying it there.
19) Is the BEST LSM308 a good fit for a residential door?
No. The LSM308 is a commercial electric mortise lock, built for door hardware applications like healthcare access control, schools, government buildings and multi-tenant commercial property. For a residential or light ornamental mortise application, something like the Baldwin 6301 entry/apartment mortise lock body is the more appropriate direction.
20) Is a Dormakaba PowerPlex P2066 a substitute for the BEST LSM308 if I want to avoid running power?
They solve different problems. The Dormakaba PowerPlex P2066 is a mortise lock in the PowerPlex 2000 series, a self-powered keyless line, so it addresses the no-wire opening. The BEST LSM308 is the opposite case: an electric mortise lock with an SPDT switch rated to 2 Amps at 24VDC that monitors latchbolt and trim locked or unlocked status, ordered handed as Left Hand Reverse or Right Hand Reverse with the switch in fire rated or standard form. If the requirement on the drawing is door status back to a panel, the PowerPlex does not replace it.
How fast can I get the BEST LSM308 626 RHR delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the BEST LSM308 626 RHR come with a warranty?
Absolutely. The BEST LSM308 626 RHR is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST LSM308 626 RHR?
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