SDC MS-18 Latch and Deadbolt M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$144.25
SDC MS-18 Latch and Deadbolt Monitoring Strike Kit

SDC MS-18 Latch and Deadbolt Monitoring Strike Kit with SPDT Switch for Mortise Locks

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Model: MS18

In Stock (leaves warehouse same day if ordered before 3pm ET)

$144.25
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SDC MS-18 Latch and Deadbolt Monitoring Strike Kit with SPDT Switch for Mortise Locks

Professional Door Status Monitoring Solution

The SDC MS-18 is a high-performance Latch and Deadbolt Monitoring Strike Kit specifically designed for use with mortise locks in access control applications. This professional-grade monitoring solution provides precise detection of both latch and deadbolt positions, featuring a Single Pole Double Throw (SPDT) switch for the deadbolt monitor to ensure accurate feedback for security and automation systems. Engineered with durable components for commercial use, the MS-18 enhances the overall functionality of electrified door hardware setups.

Professional Features & Benefits

  • Mortise Lock Compatibility: Specifically designed for integration with mortise lock systems for seamless installation and operation.
  • Dual Position Monitoring: Provides reliable detection of both latch and deadbolt positions for comprehensive door status feedback.
  • SPDT Switch Technology: Single Pole Double Throw monitoring switch ensures accurate deadbolt position feedback for security and automation systems.
  • Commercial-Grade Construction: Durable components engineered for demanding commercial applications and long-term reliability.
  • Access Control Integration: Ideal for integration into delayed egress, electrified locking, or comprehensive monitoring systems.
  • Precise Status Feedback: Delivers accurate lock position information essential for security system operation and compliance monitoring.

Technical Specifications

  • Department: Door Hardware
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure

Professional Applications

  • Commercial Building Security Systems
  • Access Control System Integration
  • Healthcare Facility Door Monitoring
  • Educational Institution Safety Systems
  • Government and Municipal Buildings
  • Delayed Egress Compliance Systems
  • Industrial Facility Security Monitoring

Why Choose SDC Quality?

SDC MS-18 monitoring strike kits deliver professional-grade reliability with durable components engineered for demanding commercial applications. The SPDT switch technology provides precise deadbolt position feedback essential for security system operation, while the mortise lock compatibility ensures seamless integration into existing door hardware configurations. Trusted for critical access control applications where dependable lock status monitoring is essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Department:
Door Hardware
Commercial/Residential:
Commercial
Product Category:
Locks, Cylinders, Cores, Keyblanks / Mortise Cylinder
Product Group:
Locks, Cylinders, Cores, Keyblanks / Mortise Cylinder
Product Subgroup:
Parts and Accessories
Product Type:
Strike Kits
Subcategory:
Parts and Accessories

SDC MS18 – Frequently Asked Questions

1) What does the SDC MS-18 monitoring strike kit actually monitor on the door?
The MS-18 monitors two things at once: latch position and deadbolt position. The deadbolt monitor runs through a Single Pole Double Throw (SPDT) switch, so the access control panel gets a true position signal rather than just a door-closed contact. That distinction matters if you need to prove the opening is actually secured, not just shut.
2) Will the SDC MS-18 strike kit work with a cylindrical lockset?
No. The MS-18 is built for mortise locks, which throw both a latchbolt and a separate deadbolt into the strike. A cylindrical lever lock has no deadbolt for the SPDT monitor to read, so the kit has nothing to sense. For a cylindrical opening you want a door position switch or a monitored electric strike sized for cylindrical prep instead.
3) Does the SDC MS-18 lock the door, or is it only a sensing device?
It is sensing only. The MS-18 is a strike kit with monitoring switches built in, not an electric strike or an electrified lock. Securing the opening is still the job of the mortise lock; the MS-18 just reports what that lock is doing to your access control or automation system.
4) Can I use the MS-18 strike on a delayed egress opening?
Yes, that is one of its stated applications. Delayed egress and electrified locking systems need to know whether the deadbolt is actually thrown before they arm or release, and the MS-18's SPDT deadbolt monitor supplies that. The latch monitor covers the secondary condition of whether the door has latched at all.
5) Why choose an SPDT switch over a simple normally-open contact for deadbolt monitoring?
An SPDT switch gives you both a normally open and a normally closed path off the same actuation, so the panel can be wired for either a make or a break on deadbolt throw without adding a relay. On supervised circuits that flexibility is usually what decides which strike kit gets specified. The MS-18 uses SPDT on the deadbolt monitor specifically.
6) Is the MS-18 a residential product or rated for commercial use?
Commercial. SDC lists the MS-18 as a commercial door hardware item, and it is built for access control work in buildings like healthcare facilities, schools, and government offices where lock status has to report back to a panel.
7) How many versions of the SDC MS-18 are there, and which one do I order?
There is one configuration, ordered as model MS18. No handing, finish, or voltage choice to work through, so the order decision is simply confirming your opening uses a mortise lock with a deadbolt.
How fast can I get the SDC MS18 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
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 SDC MS18 come with a warranty?
Absolutely. The SDC MS18 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 SDC MS18?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the SDC MS18 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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