SDC MC-4 Recessed Magnetic Doo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$61.00
$39.44
SDC MC-4 Recessed Magnetic Door Position Sensor, 3/4"

SDC MC-4 Recessed Magnetic Door Position Sensor with 3/4" Profile

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Model: MC-4

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

$61.00
$39.44
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SDC MC-4 Recessed Magnetic Door Position Sensor with 3/4"; Profile

Professional Door Position Monitoring Solution

The SDC MC-4 is a recessed magnetic door position sensor designed for commercial access control applications. This compact sensor features a 3/4"; profile for discreet installation while providing reliable door position monitoring. Part of SDC's comprehensive exit switches and sensors line, the MC-4 offers precise magnetic sensing technology for various request-to-exit and door monitoring applications.

Professional Features & Benefits

  • Compact Recessed Design: 3/4"; profile allows for discreet installation in door frames and jambs without compromising aesthetics.
  • Magnetic Sensing Technology: Reliable non-contact operation eliminates mechanical wear for long-term performance in high-traffic applications.
  • Commercial-Grade Construction: Engineered for demanding commercial environments with robust housing and dependable sensor components.
  • Versatile Application Support: Compatible with request-to-exit systems and door monitoring configurations for flexible security integration.
  • Professional Installation: Recessed mounting design provides clean appearance while protecting sensor from tampering and environmental factors.
  • Access Control Integration: Designed to work seamlessly with electronic access control systems for comprehensive door monitoring solutions.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • Product Category: Electronic Access Control
  • Product Group: Electronic Access Controls
  • Product Subgroup: Part and Accessories
  • Product Type: Door Position Sensor
  • Series: MC-4
  • Subcategory: Part and Accessories

Professional Applications

  • Commercial Building Security Systems
  • Retail Loss Prevention
  • Healthcare Facility Access Control
  • Educational Institution Safety Systems
  • Industrial Facility Monitoring
  • Emergency Exit Compliance
  • Government and Municipal Buildings

Why Choose SDC Quality?

SDC door position sensors deliver professional-grade reliability with magnetic sensing technology engineered for commercial applications. The MC-4 series provides dependable door monitoring performance in a compact recessed design that maintains building aesthetics while ensuring accurate position detection. Engineered for demanding commercial applications where dependable performance is essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Part and Accessories
Series:
MC-4
Commercial/Residential:
Commercial
Electronic:
Yes
Product Type:
Door Position Sensors
Product Group:
Electronic Access Controls
Product Subgroup:
Parts and Accessories
Product Category:
Electronic Access Control
Department:
Door Hardware

SDC MC-4 – Frequently Asked Questions

1) What is the difference between the SPDT and DPDT versions of the SDC MC-4 door position sensor?
The MC-4 magnetic door position sensor is ordered with either an SPDT or a DPDT contact. SPDT gives you one set of transfer contacts, enough to report door position to a single input on an access control panel or alarm board. DPDT gives you two independent sets, so one can feed the access control system while the other drives a separate circuit such as a local alarm, an annunciator, or a building management input. If the door has to report to two systems at once, order DPDT.
2) Is the SDC MC-4 a surface mount or recessed door contact?
Recessed. The MC-4 is a concealed magnetic contact: the switch body drops into a hole bored in the frame and the magnet into a matching hole in the door edge, so nothing shows when the door is shut. That also puts the sensor out of reach of tampering and knocks from carts or traffic. If the door or frame is hollow metal you cannot drill, or the opening is glass or an aluminum storefront with no room to bore, you want a surface mount contact instead.
3) Does the 3/4 inch profile on the SDC MC-4 refer to the bore size I need to drill?
The 3/4 inch figure is the sensor's profile, which is what governs the recessed prep in the door edge and frame. It is a small-diameter concealed contact, so it suits standard hollow metal and wood frames without a large cutout. Confirm the exact prep against the template that ships with the unit before boring the frame.
4) Can I use the SDC MC-4 for request-to-exit, or is it only for door monitoring?
Both. The MC-4 is a magnetic position sensor, so it reports whether the door is open or closed. That signal is used two ways: as a door position switch feeding forced-door and door-held-open monitoring, and as an input in request-to-exit and exit switch schemes where the controller needs to know the door actually opened. The relay contact does the work either way, which is why the SPDT versus DPDT choice matters more than anything else on the order.
5) How many MC-4 sensors do I need for a pair of doors?
One per leaf. A magnetic position contact senses the gap between a single door edge and its magnet, so a pair of doors needs two sensors, each with its own bored prep in the leaf and the frame or the meeting stile. If both leaves have to report independently, run each to its own panel input; if the system only needs to know the opening is secure, the two contacts can be wired in series so either leaf opening breaks the circuit.
6) Is the SDC MC-4 rated for commercial use or is it a residential contact?
Commercial. SDC builds the MC-4 for commercial access control work, and it is deployed in healthcare, education, retail, industrial, and government facilities. Magnetic sensing is non-contact, so there is no mechanical plunger to wear out on a door that cycles hundreds of times a day, which is the reason it holds up in high traffic openings where a mechanical switch fails.
How fast can I get the SDC MC-4 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 MC-4 come with a warranty?
Absolutely. The SDC MC-4 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 MC-4?
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 MC-4 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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