SDC 490 Series Emergency Relea...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$430.00
$262.00
SDC SDC 490 Series - Emergency Release Stations SDC-490

SDC 490 Series Emergency Release Station with Integrated Alarm for Fail-Safe Electric Locks

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Model: 492WP

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

$430.00
$262.00
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SDC 490 Series Emergency Release Station with Integrated Alarm for Fail-Safe Electric Locks

Professional Emergency Door Release Solution for Electric Locking Systems

The SDC 490 Series emergency release stations provide immediate unlocking of perimeter doors or interior doors equipped with fail-safe electric locks. Specifically designed for emergency door release applications, these stations feature an integrated siren that sounds upon activation and may influence the approval of an electric locking system. Available in break glass (491) and pull station (492, 492WP) configurations with blue housing to eliminate confusion with red fire alarm stations.

Professional Features & Benefits

  • Emergency Door Release Function: Provides immediate unlocking of fail-safe electric locks on perimeter or interior doors for critical emergency egress.
  • Integrated Alarm System: Built-in siren sounds upon activation for local door annunciation and emergency notification.
  • Dual Contact Configuration: Main contact for lock release plus auxiliary contact for remote monitoring, CCTV activation, or alarm system integration.
  • Safety-Focused Design: Blue housing eliminates confusion with red fire alarm stations and includes easy-to-read activation instructions.
  • Multiple Model Options: Available as break glass station (491), standard pull station (492), or weatherized pull station (492WP) for various applications.
  • Flexible Mounting Options: Surface mount, single gang, or double gang back box mount with plaster ring cover for versatile installation.
  • Complete Installation Kit: Includes two replacement glass pieces for break glass models to ensure continued operation.
  • System Integration Ready: Designed to influence approval of electric locking systems and integrate with building security infrastructure.

Technical Specifications

  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Electronic: Yes
  • PDF:SDC Full Catalog: https://zensupply.com/content/pdf/lcn/CondensedHardwareBrochure
  • Product Category: Electronic Access Controls
  • Product Group: Electronic Access Controls
  • Product Model: 491, 492, 492WP
  • Product Subgroup: Sensors, Switches, Relays and Timers
  • Product Type: Emergency Door Releases
  • Series: 490 Series
  • Subcategory: Emergency Door Release

Professional Applications

  • Commercial Building Emergency Egress Systems
  • Healthcare Facility Security and Safety
  • Educational Institution Emergency Response
  • Industrial Facility Access Control
  • Government and Municipal Building Security
  • Multi-Tenant Residential Emergency Systems
  • Retail Security and Loss Prevention

Why Choose SDC Quality?

SDC 490 Series emergency release stations deliver professional-grade reliability with integrated alarm functionality and dual contact configuration for comprehensive emergency response systems. Specifically designed for emergency door release applications, these stations may influence the approval of electric locking systems. Engineered for demanding commercial applications where dependable emergency egress performance is essential.

Manufacturer Resources

SDC Full Catalog

Product Specs

Subcategory:
Emergency Door Release
Series:
490 Series
Product Group:
Electronic Access Controls
Product Subgroup:
Sensors, Switches, Relays and Timers
Product Type:
Emergency Door Releases
Commercial/Residential:
Commercial
Electronic:
Yes
Product Model:
491, 492, 492WP
Product Category:
Electronic Access Controls
Department:
Door Hardware

SDC 492WP – Frequently Asked Questions

1) What is the SDC 490 Series emergency release station used for?
It's a manual release device for doors held by fail-safe electric locks: hit the station and the lock drops power, so the door unlocks for egress. The 490 Series covers perimeter doors and interior doors on commercial openings, and each station has a built-in siren that sounds when it is operated so people nearby know the door was released. If your lock is fail-secure (stays locked when power is removed), this is the wrong device for you.
2) Should I use the SDC 491 break glass station or the 492 pull station?
Both release the lock the same way; the difference is how you defeat casual use. The 491 is a break glass station, so it cannot be operated without breaking the glass, which leaves physical evidence of who used the door and discourages nuisance activation in a school or hospital corridor. The 492 is a pull station, reset without any consumable. If you go with the 491, replacement glass matters, and two spare pieces come with it.
3) Is there an SDC emergency release station rated for outdoor or wash-down locations?
The 492WP is the weatherized version of the pull station, and it ships with its own box, so you are not sourcing a separate enclosure for an exterior or damp location. The 491 and 492 are the standard indoor builds.
4) How does the SDC 490 station mount, and do I need a back box?
Three ways: surface mount, or into a single gang or double gang back box using the plaster ring cover. The 491 and 492 leave the box to the installer, so on a new run you rough in a gang box and finish with the plaster ring; on an existing wall the surface mount option avoids opening it up. The 492WP is the exception, its box is included.
5) Can an SDC 490 release station trigger my alarm panel or a camera at the same time it unlocks the door?
Yes. There are two contacts: the main contact drops the lock, and a separate auxiliary contact is there for remote monitoring, CCTV activation, or tie-in to an alarm system. That means the access control head end or the DVR sees the release as its own event rather than you having to piggyback off the lock circuit.
6) Will an emergency release station help get my electrified locking system approved by the AHJ?
That is a large part of why the 490 Series exists. SDC states these stations may influence the approval of an electric locking system, and the design elements point that way: a manual release that kills power to a fail-safe lock, a local siren on activation, and printed activation instructions on the face. Final approval is the authority having jurisdiction's call on your specific opening.
7) Why is the SDC 490 emergency release station blue instead of red?
Deliberate. The housing is blue so it is not mistaken for a red fire alarm pull station, which matters where the two end up on the same corridor wall. Occupants pulling an egress release when they meant to report a fire, or the reverse, is the failure mode the color is there to prevent.
8) Can I use the SDC 490 station as a request-to-exit or push-to-exit button?
Not the right part for that. The 490 Series is an emergency release station, and it sounds a siren every time it is operated, which makes it unusable for routine egress traffic. Use it as the emergency override on an electrically locked door and put a standard push button or REX device on the everyday exit path.
9) Is the SDC 490 Series suitable for a hospital or school, or is it a residential product?
It is a commercial-duty device, and the intended applications named are healthcare security and safety, educational institution emergency response, government and municipal buildings, industrial facilities, retail loss prevention, and multi-tenant residential emergency systems. If you are standardizing release stations across a campus, all three models share the same series so the look and the operating instruction stay consistent from door to door.
How fast can I get the SDC 492WP 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 492WP come with a warranty?
Absolutely. The SDC 492WP 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 492WP?
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 492WP 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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