Dormakaba SD2 EMR Replacement ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$794.00
$487.80
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Dormakaba SD2 EMR Replacement Detector Module for 1800 Series Door Holder

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Model: SD2

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

$794.00
$487.80
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Dormakaba SD2 EMR Replacement Detector Module for 1800 Series Door Holder

The Dormakaba SD2 is an EMR (Electro-Magnetic Release) replacement detector module engineered specifically for use with Dormakaba's 1800 Series door holders. Designed as a genuine commercial-grade replacement part, the SD2 restores full functionality to your 1800 Series holder system, ensuring reliable electromagnetic release operation in demanding commercial environments. This factory-matched component maintains the performance integrity of the original installation and is classified for commercial applications.

Key Features

  • Direct Compatibility: Engineered as a purpose-built replacement detector module for the Dormakaba 1800 Series door holder, ensuring a precise fit and seamless integration with existing hardware.
  • EMR Detector Technology: Electro-Magnetic Release detector module maintains the reliable hold-open and automated release functionality central to the 1800 Series system.
  • Genuine OEM Replacement Part: Factory-matched Dormakaba component preserves the performance standards and operational integrity of the original door holder installation.
  • Commercial-Grade Construction: Rated for commercial applications, the SD2 is built to withstand the demands of high-traffic institutional and commercial environments.
  • Simplified System Restoration: Replaces a worn or failed detector module without requiring full door holder replacement, reducing downtime and installation costs.
  • Dorma Parts & Accessories Lineage: Sourced from the Dormakaba (formerly Dorma) parts and accessories program, ensuring manufacturer-backed quality and compatibility.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Door Closer Parts
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: SD2

Typical Applications

  • Commercial Office Buildings with Hold-Open Door Systems
  • Educational Facilities Requiring Code-Compliant Fire Door Holders
  • Healthcare Institutions with Electromagnetic Door Hold-Open Devices
  • Government and Municipal Buildings
  • Industrial and Warehouse Facilities
  • Retail Establishments with High-Traffic Entryways
  • Multi-Tenant Residential and Mixed-Use Properties

Why Dormakaba SD2?

Dormakaba is a globally recognized leader in door hardware and access solutions, and the SD2 detector module reflects the brand's commitment to precision engineering and long-term system reliability. As a genuine OEM replacement component for the 1800 Series door holder, the SD2 ensures your electromagnetic release system continues to perform to its original commercial-grade specifications. Choosing an authentic Dormakaba replacement part protects your investment and maintains the dependability that professional installers and facility managers rely on.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Door Closer Parts
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
SD2
Features:
Dorma Parts & Accessories

Dormakaba SD2 – Frequently Asked Questions

1) What does the Dormakaba SD2 detector module actually do on a 1800 Series door holder?
The SD2 is the EMR (electro-magnetic release) detector module inside a Dormakaba 1800 Series door holder. It's the part that handles the hold-open and automated release function, so when the module fails the holder either stops holding the door open or stops releasing it on signal. Swapping in the SD2 restores that electromagnetic release operation without touching the rest of the holder.
2) Will the SD2 fit door holders other than the Dormakaba 1800 Series?
No. The SD2 is a purpose-built detector module for the Dormakaba 1800 Series door holder only. If your hold-open device is another series or another brand, this module is the wrong part, and you should source the detector specific to that unit rather than trying to adapt this one.
3) Do I have to replace the whole door holder if the detector fails, or can I just change the module?
Just the module. The SD2 is sold as a field replacement so a worn or failed detector can be changed out on an installed 1800 Series holder instead of pulling and replacing the entire unit. For a facilities crew that means the opening stays in service with a part swap rather than a full hardware change.
4) Is the SD2 a genuine Dormakaba part or an aftermarket copy?
Genuine OEM. The SD2 comes out of the Dormakaba (formerly Dorma) parts and accessories program, so it's the factory-matched detector for the 1800 Series rather than a third-party equivalent. That matters on hold-open hardware tied to a fire alarm release, where a facility usually wants the original manufacturer's component on record.
5) Is the Dormakaba SD2 rated for commercial traffic or is it a light-duty residential part?
Commercial. The SD2 is classified for commercial applications and is used in offices, schools, healthcare buildings, government facilities, warehouses, retail entries, and multi-tenant residential or mixed-use properties, all places where hold-open doors cycle constantly. It isn't a light-duty residential component.
6) Do I need to order anything else with the SD2 to get the 1800 Series holder working again?
The SD2 is the detector module on its own. If the fault is in the detector, that's the part you need. If the holder's armature, mounting plate, or wiring is also damaged, those are separate 1800 Series components and are ordered individually.
7) Is there more than one version of the SD2 to choose from?
No options to specify. The SD2 detector module is ordered as a single configuration, so there's no finish, voltage, or handing choice to make on it.
How fast can I get the Dormakaba SD2 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 Dormakaba SD2 come with a warranty?
Absolutely. The Dormakaba SD2 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 Dormakaba SD2?
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 Dormakaba SD2 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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