SDC 700 Series Key Switch Asse...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$121.00
$88.19
SDC SDC 700 Series - Key Switches Assembly SDC-700

SDC 700 Series Key Switch Assembly with Stainless Steel Faceplate

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Model: 701U
$121.00
$88.19
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$121.00
$88.19
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SDC 700 Series Key Switch Assembly with Stainless Steel Faceplate

Professional Access Control Key Switch Solution

The SDC 700 Series Key Switch Assembly provides an economical method for authorized control in commercial access control applications. Compatible with standard 1"; to 1-3/8"; mortise key cylinders and interchangeable core cylinders, these assemblies maintain compatibility with new or existing facility mechanical key systems. Featuring 20 gauge stainless steel faceplates and heavy duty rated switches with 2 Amps @ 30 VDC resistive contact rating, the 700 Series delivers reliable performance for professional installations.

Professional Features & Benefits

  • Cylinder Compatibility: Works with standard 1"; to 1-3/8"; mortise key cylinders and interchangeable core cylinders for flexible key system integration.
  • Heavy-Duty Construction: 20 gauge stainless steel faceplates provide exceptional durability and corrosion resistance for long-term commercial use.
  • Electrical Performance: 2 Amps @ 30 VDC resistive contact rating ensures reliable switching for access control systems.
  • Flexible Installation Options: Available in narrow faceplate (700N), single gang (700), and double gang (700T) configurations for various mounting requirements.
  • Tamper-Resistant Design: Recessed cylinder design and tamper resistant spanner screws provide enhanced security against unauthorized access.
  • Contact Configuration Options: Available in SPDT or DPDT configurations with alternate action (AA) or momentary (MO) operation for system compatibility.
  • Professional Wiring: 22 gauge wire leads with 7"; length provide convenient connection to access control systems.
  • Large Actuator Design: Oversized actuator ensures positive and consistent activation for reliable operation.

Technical Specifications

  • Commercial/Residential: Commercial
  • Contact Rating: 2 Amps @ 30 VDC Resistive
  • Department: Door Hardware
  • Electronic: Yes
  • Product Category: Electronic Access Controls
  • Product Group: Electronic Access Controls
  • Product Model: 700N, 700, 700T
  • Product Subgroup: Sensors, Switches, Relays and Timers
  • Product Type: Key Switches
  • Series: 700 Series
  • Subcategory: Key Switches

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

Tamper-Resistant Design

The 700 Series features tamper-resistant construction with recessed cylinder design and tamper resistant spanner screws to prevent unauthorized access or tampering. The large actuator provides positive activation while maintaining security against manipulation attempts.

Why Choose SDC Quality?

SDC 700 Series Key Switch Assemblies deliver professional-grade reliability with 20 gauge stainless steel construction and heavy duty rated switches for demanding commercial applications. The 2 Amps @ 30 VDC resistive contact rating ensures dependable switching performance in access control systems. Engineered for commercial installations where consistent authorized control and tamper resistance are essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Key Switches
Series:
700 Series
Contact Rating:
2 Amps @ 30 VDC Resistive
Product Group:
Electronic Access Controls
Product Subgroup:
Sensors, Switches, Relays and Timers
Product Type:
Key Switches
Commercial/Residential:
Commercial
Electronic:
Yes
Product Model:
700N, 700, 700T
Product Category:
Electronic Access Controls
Department:
Door Hardware

SDC 701U – Frequently Asked Questions

1) Will an SDC 700 Series key switch work with my existing building key system?
Yes, in most cases. The 700 Series key switch assembly accepts standard 1 inch to 1-3/8 inch mortise key cylinders and interchangeable core cylinders, so you can key it into the same system already running the building. The cylinder is not supplied as part of the switch; you pull one from your existing keyway and drop it in, which is how facilities keep one key working both the mechanical locks and the access control override.
2) What is the difference between the SDC 700, 700N and 700T key switch sizes?
Three plate sizes cover three mounting conditions. The 700N narrow faceplate is for mullions and narrow stile aluminum door frames where there is no room for a standard plate. The 700 single gang mounts to a standard single gang box in a wall. The 700T double gang gives you the wider plate when you are ganging the key switch with other devices or need the larger box. Pick the size from what the wall or mullion will physically take, then pick the contact model.
3) Should I order an alternate action or momentary SDC key switch?
It depends on what the switch has to do. Momentary (MO) makes the contact only while you hold the key turned, then springs back, which is what you want for a release or a request to exit pulse into a controller. Alternate action (AA) latches in position, so one turn holds the circuit made until you turn it back, which is what you want to hold a door unlocked, disable a maglock, or shunt an alarm for a delivery window. The 701 is AA SPDT, 702 is MO SPDT, 705 is AA DPDT and 706 is MO DPDT.
4) Can one SDC 700 key switch control two separate circuits?
Yes, and there are two ways to get there. A DPDT model (705, 706, 711, 712, 713) switches two circuits off one throw, which is how you release a lock and shunt the alarm contact at the same time. The two-contact models give you independent blocks instead: 707 is two momentary SPDT, 709 is two alternate action SPDT, and 708 mixes one momentary with one alternate action SPDT so a single key position can pulse one system and latch another. In DPDT the same pairings exist as 711, 713 and 712.
5) Can an SDC 700 Series key switch drive a maglock or electric strike directly?
Not directly on most locks. The contacts are rated 2 Amps at 30 VDC resistive, which is enough for a control input to an access panel, a relay coil, or a low draw device, but an electric strike or maglock inrush will exceed it. Standard practice is to switch a relay or feed the controller input and let the power supply drive the lock. If you must break lock power at the switch, size the load against the 2 Amp 30 VDC rating first.
6) I need a key switch that can carry line voltage, not just a low voltage signal. Is the SDC 700 the right one?
No. The 700 Series contacts are rated 2 Amps at 30 VDC resistive, which is a low voltage control rating. For a higher current or line voltage load, the ROFU 9200 SPDT key switch is rated 10A at 250V and 15A at 125V and mounts in a standard stile. That is the one to specify when the key switch is breaking power to a load rather than signaling a controller.
7) Can I mount a key switch on a narrow aluminum storefront mullion?
Yes, with the narrow version. The 700N narrow faceplate is the configuration made for that condition; the single gang 700 and double gang 700T plates need a wall box and will not sit on a narrow stile or mullion. The ROFU 9200 SPDT key switch is another standard stile option if you want a single-pole switch with a higher contact rating in the same kind of location.
8) What keyed switch works on a narrow aluminum stile if the SDC 700 single gang plate is too wide?
The SDC 700 Series is built in three faceplate widths - Narrow, Single Gang, and Double Gang - so the narrow faceplate version (700N) is the one to specify for a narrow stile door frame while keeping the same 20 gauge stainless steel plate and the same 1 inch to 1-3/8 inch mortise or interchangeable core cylinder. If the opening calls for a different manufacturer, the ROFU 9200 is an SPDT key switch built for standard stile mounting. Both are keyed switches for access control release; the choice comes down to the stile width you are actually working with and the key system you are matching.
9) The SDC 701 key switch contacts are rated 2 Amps at 30 VDC - what keyed switch should be used to break a line voltage load directly?
The SDC 700 Series switches carry a 2 Amp at 30 VDC resistive contact rating, which suits low voltage access control signalling into a controller, relay, or power supply input rather than direct line voltage switching. The ROFU 9200 SPDT key switch is rated 10A/250V-15A/125V, a different class of contact intended for higher current AC loads. If the drawing shows the key switch feeding a low voltage release circuit, the 700 Series rating covers it; if the key switch is expected to carry the load itself, the 9200 rating is the one to check against the load.
10) Can a Dortronics 5236 push button console replace an SDC key switch at a controlled door?
No - they do different jobs. The Dortronics 5236 Series is a momentary snap-action push button station, one DPDT 3/8 inch diameter button with an LED on a mini-box console, so anyone standing at it can operate it. The SDC 700 Series is a key switch: operation requires a 1 inch to 1-3/8 inch mortise or interchangeable core cylinder keyed into the facility key system, which is what makes it an authorized control point. Use the 5236 where any occupant may release the door, and a 700 Series key switch where the release must be restricted to keyholders.
11) Is the SDC 700 key switch secure enough for an exterior or public-facing wall?
It is built for it. The faceplate is 20 gauge stainless steel, the cylinder sits recessed so it cannot be gripped and turned with a wrench, and the plate is held with tamper resistant spanner screws rather than a standard driver. You can also add the ATS anti-tamper switch, which reports when the assembly is opened, so a panel sees the attempt rather than just the door state.
12) How do I get an SDC key switch to show whether the door is locked or unlocked?
Order it with an LED indicator. Four options: L1G is a single green, L1R a single red, L2 gives one green and one red so you can show locked and unlocked separately, and LT is a single tri-color LED that changes color in one window. Two-color feedback is the usual pick where staff at a reception desk or nurse station need to see the state of the opening from across the room. If the switch is only ever operated by someone standing at it, none is a valid choice.
13) What do I need to order alongside an SDC 700 key switch to finish the job?
Three things beyond the switch itself. The mortise or interchangeable core cylinder, which is not part of the assembly, in your keyway and between 1 inch and 1-3/8 inch. A box behind it sized to the plate you chose, single gang or double gang, or a mullion cavity for the narrow 700N. And the connection at the far end: the switch comes with 22 gauge leads about 7 inches long, so plan a splice inside the box rather than a home run straight off the switch.
14) What is the difference between an SDC 700 key switch and a Dortronics console-mounted key switch?
Mounting and intent. The SDC 700 is a flush plate assembly that goes into a gang box or mullion at the opening, keyed to the building system. The Dortronics 5246 Series is a mini-box console unit combining one SPDT key switch with two SPDT push buttons, key removable in two positions, which suits a desk or guard station where an operator needs a key-secured function plus buttons in one enclosure. If you want buttons without a key at all, the Dortronics 5236 Series is a mini-box console with a DPDT momentary snap-action push button and one LED.
15) Can I standardize one key switch across a whole facility with different openings?
Yes, and that is the usual reason this series gets specified across a campus. The contact model, plate size, finish and indicator are all chosen independently, so a hospital or school can run the same 700 Series switch on wall boxes, ganged panels and narrow mullions while every one of them takes a cylinder from the existing master key system. Standardizing on one contact model, say 702 momentary SPDT for releases, keeps the spares shelf to one part number in several plate sizes.
16) What is the alternative to an SDC 700 key switch when there is no gang box in the wall to recess into?
The SDC 700 Series mounts behind a stainless steel faceplate in narrow, single gang, or double gang widths, so it assumes a box or prepped opening at the wall or stile. Where no box exists, the Dortronics 5246 Series puts a key switch on a mini-box console instead - that version carries one SPDT key switch plus two SPDT push buttons, with the key removable in two positions. The functional trade is real: the console gives you a self-contained surface enclosure, while the 700 Series gives a flush recessed plate with the recessed cylinder and tamper resistant spanner screws.
17) What should I use if one key needs to switch two separate circuits at the same door?
The SDC 700 Series carries multi-contact models on a single cylinder: 707 with two momentary SPDT contacts, 709 with two alternate action SPDT, 708 combining one momentary and one alternate action SPDT, and 711, 712, and 713 doing the same in DPDT. One key turn drives both sets. The Dortronics 5246 Series reaches two extra circuits a different way, pairing one SPDT key switch with two separate SPDT push buttons on a console, so the additional circuits are operated by button rather than by the key. If both circuits must be under key control, the two-contact 700 Series models are the ones to look at.
18) What finish should I order to match the rest of the hardware on the opening?
Seven finishes cover the 700 Series: 605 bright brass, 606 dull brass, 613 oil rubbed bronze, 625 bright chrome, 626 dull chrome, 629 bright stainless and 630 satin stainless steel. On commercial openings 630 satin stainless and 626 dull chrome are the two that blend with most lever trim and push plates already in a building; 613 is the one to pick against dark bronze storefront.
19) Which keyed switch matches a specific architectural finish across a run of doors?
The SDC 700 Series faceplate is offered in 605 bright brass, 606 dull brass, 613 oil rubbed bronze, 625 bright chrome, 626 dull chrome, 629 bright stainless, and 630 satin stainless steel, so the switch plate can be ordered to match trim already on the other openings. The ROFU 9200 covers the same SPDT keyed release function for a standard stile. Where a fleet of doors has to read consistently, the seven-finish range on the 700 Series is the practical reason to standardize on it rather than mixing switch brands down a corridor.
How fast can I get the SDC 701U 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 701U come with a warranty?
Absolutely. The SDC 701U 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 701U?
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 701U from ZenSupply?
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Product Reviews

  • 4
    Key switch

    Posted by Tyler Coviello on May 21st 2025

    The SDC 700 Series Key Switches Assembly is a reliable and economical solution for controlling access in various applications. Its compatibility with standard mortise cylinders and interchangeable cores allows for easy integration with existing mechanical key systems.

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