Von Duprin 050251 Request to E...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$383.00
$269.53
Von Duprin 050251 Request to Exit Switch for 22/33A/35A/98/99 Series Exit Devices

Von Duprin 050251 Request to Exit Switch for 22/33A/35A/98/99 Series Exit Devices

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Model: 50251

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

$383.00
$269.53
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Von Duprin 050251 Request to Exit Switch for 22/33A/35A/98/99 Series Exit Devices

Electronic Door Monitoring Switch for Commercial Exit Device Applications

The Von Duprin 050251 Request to Exit Switch is a Grade 1 commercial-grade electronic switch designed to monitor the status of door openings when used with compatible 22, 33A, 35A, 98, and 99 Series exit devices. These electronic switches integrate seamlessly with exit devices to signal door activity and can be paired with accessories such as independent horns or centralized security systems to provide enhanced security levels. Available in standard and low current options, and including a waterproof RX variant, this switch delivers flexible, reliable monitoring for a wide range of commercial door applications.

Professional Features & Benefits

  • Series Compatibility: Designed for use with Von Duprin 22, 33A, 35A, 98, and 99 Series exit devices, providing broad compatibility across a wide range of commercial exit device installations.
  • Multiple Switch Types Available: Choose from Request to Exit (RX), Latchbolt Monitoring (LX), and Signal Switch (SS) options to meet specific application monitoring requirements on both the push and pull sides of a door.
  • Request to Exit (RX) Monitoring: Monitors the exit device's touchbar and signals the door opening — ideal for push-side applications on 98/99, 55, 88, 33A/35A, and 22 Series exit devices.
  • Latchbolt Monitoring (LX) Capability: Monitors the exit device's latchbolt to signal door opening or closing; can be used independently or in conjunction with an RX switch to monitor both sides of the door on compatible 98/99, 94/95 INPACT™, 33A/35A, and 22 Series devices.
  • Signal Switch (SS) Dual Monitoring: Monitors both the touchbar and latchbolt simultaneously, signaling unauthorized use. Equipped with a key switch output requiring user override at the door — available on 98/99, 94/95 INPACT™, 33A/35A, and 22 Series exit devices.
  • Standard and Low Current Options: Available in both standard and low current configurations to accommodate varying power supply and access control system requirements.
  • Waterproof RX Option: A waterproof Request to Exit switch variant is available for applications requiring moisture resistance or exposure to demanding environmental conditions.
  • Security System Integration: Can be paired with accessories such as independent horns or connected to centralized security systems to communicate a breach at the opening and provide additional security levels.
  • Grade 1 Commercial Rating: Rated Grade 1 for heavy-duty commercial performance, ensuring reliable operation in high-traffic institutional and commercial environments.

Technical Specifications

  • Product Group: Exit Devices and Trim
  • Series: 22/33A/35A/98/99 Series
  • Grade: Grade 1
  • Product Subgroup: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Type: Exit Devices Parts
  • Commercial/Residential: Commercial
  • Parts and Accessories Type: Installation Accessories
  • Product Attribute: Parts and Accessories
  • Fire Rating: No
  • Product Category: Exit Devices and Trim
  • Department: Door Hardware

Professional Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Industrial and Warehouse Facilities
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties

Why Choose Von Duprin Quality?

Von Duprin exit device switch accessories are engineered to Grade 1 commercial standards, delivering dependable electronic monitoring performance across a broad range of compatible 22, 33A, 35A, 98, and 99 Series exit devices. With options including standard, low current, and waterproof RX configurations, as well as the ability to integrate with independent horns and centralized security systems, these switches provide versatile and reliable door status monitoring. Engineered for demanding commercial applications where consistent, professional-grade performance is essential.

Manufacturer Resources

Von Duprin 98/99 Series Catalog

Product Specs

Product Group:
Exit Devices and Trim
Series:
22/33A/35A/98/99 Series
Grade:
Grade 1
Product Subgroup:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Type:
Exit Devices Parts
Commercial/Residential:
Commercial
Parts and Accessories Type:
Installation Accessories
Product Attribute:
Parts and Accessories
Fire Rating:
No
Product Category:
Exit Devices and Trim
Department:
Door Hardware

Von Duprin 50251 – Frequently Asked Questions

1) Which Von Duprin exit devices does the 050251 request to exit switch fit?
The 050251 RX switch is built for Von Duprin 22, 33A, 35A, 98 and 99 Series exit devices. If the device on your door is one of those families, the switch is the right accessory. On anything outside those series, including other brands of device, it isn't the part.
2) What is the difference between the 050251 CON and the plain 050251 request to exit switch?
Two models are sold: 050251 CON comes with a connector, and plain 050251 comes without one. Pick CON when you want the harness to plug into a mating connector at the device or in the raceway; take the no-connector version when you are landing bare leads directly at a terminal strip or splicing into an existing run.
3) Do I have to choose fail safe or fail secure when ordering the Von Duprin 050251?
Yes, fail safe or fail secure is a required selection on the 050251, and it is field selectable, so the switch can be set either way at the door rather than being locked in at the factory. Choose based on how your access control panel expects the contact to sit when power drops.
4) What does an RX switch actually monitor on an exit device, and how is it different from LX or SS?
RX watches the touchbar: push the bar and the switch signals that someone is exiting, which is what an access control panel needs to shunt an alarm on the push side. LX watches the latchbolt instead, so it reports the door actually opening or closing, and it can run alongside an RX to cover both sides. SS monitors touchbar and latchbolt together and signals unauthorized use, with a key switch output that requires an override at the door. All three are offered across the 98/99, 33A/35A and 22 Series devices.
5) Is the Von Duprin 050251 rated for a fire door?
No. The 050251 switch carries no fire rating. It is a Grade 1 commercial-duty accessory for heavy traffic, but on a labeled fire opening the switch selection has to be made against the device manufacturer's fire-rated listing for that assembly.
6) Is the 050251 a whole exit device or just a switch that goes inside one?
It is a monitoring switch only, an electronic component that installs into an existing Von Duprin 22, 33A, 35A, 98 or 99 Series device. It has no latch, no touchbar, and no chassis. If the exit device itself needs replacing, you are buying a device, not this switch.
7) Will a Falcon 4023 mullion or 525 mullion stabilizer do the same job as the Von Duprin 050251 switch?
No. The Von Duprin 050251 is an electronic monitoring switch that signals door activity from a 22, 33A, 35A, 98, or 99 Series exit device and can feed an independent horn or a centralized security system. The Falcon 4023 is a steel mullion for double door exit device applications, and the Falcon 525 is a set of aluminum mullion stabilizers for exit devices. Both are structural parts that carry a device on an opening; neither produces any signal, so a mullion order does not cover a request to exit requirement.
8) Is there a request to exit switch that will survive an exterior door that gets rained on?
A waterproof RX variant is offered for openings exposed to moisture or harsh conditions. On a covered interior opening the standard RX is the normal pick; specify the waterproof version for exterior doors, loading docks, or wash-down areas.
9) Can the 050251 RX switch work with a low current access control system?
Both standard and low current configurations are offered, so the switch can be matched to what your power supply and access control board will carry. Confirm the current draw your panel input expects and order the matching configuration.
10) Can a request to exit switch be tied into a building alarm or just a local horn?
Either. The 050251 can drive an independent horn at the opening, or be wired back into a centralized security system so a breach at that door reports to the head end. That is the usual difference between a single problem door and a facility standardizing monitored openings across a campus.
11) I need to monitor a pair of doors with exit devices. Does the 050251 cover both leaves?
One switch monitors one device, so a pair with a device on each leaf needs a switch in each leaf. If the pair uses a removable mullion instead, only the active leaf carries the rim device and switch. ZenSupply stocks mullion hardware for that arrangement, including the Falcon 4023 steel mullion for double door exit device applications and the Falcon 525 aluminum mullion stabilizers.
12) Can I run both an RX and an LX switch on the same exit device?
Yes. LX can be installed on its own or together with an RX so you monitor both sides of the door, the touchbar on the push side and the latchbolt on the pull side. That pairing is supported on 98/99, 94/95 INPACT, 33A/35A and 22 Series devices. Facilities that want to know both that someone requested exit and that the door actually opened typically specify both.
13) For monitoring an exit device on a Falcon 24 Series or T Series opening, does the Von Duprin 050251 fit?
The Von Duprin 050251 is built for Von Duprin 22, 33A, 35A, 98, and 99 Series exit devices. Falcon parts such as the 610061 concealed vertical top rod for the 24 Series Monarch F-25-C and F-25-CWDC devices, and the Falcon T Series 2-3/8 inch square corner deadlatch replacement part, belong to Falcon device lines with their own part numbering. Specify the switch against a Von Duprin device in the listed series, and keep Falcon openings on Falcon components.
14) Can an Accentra 7110/7120 top latch replacement component be used in place of a Von Duprin 050251?
No. The Accentra 60-7010-0049-999 is a top latch replacement component for 7110/7120 exit devices, and the 60-7010-0050-999 is the equivalent top latch component for the 7110F. Those are latching hardware for Accentra devices. The Von Duprin 050251 is a switch for Von Duprin 22, 33A, 35A, 98, and 99 Series devices, available in standard and low current versions plus a waterproof RX, and it monitors rather than latches. A door that needs its latchbolt or touchbar monitored needs the switch; a door with a failed top latch needs the latch component for its own device line.
15) We need keyed control at the exit device, not electronic monitoring. Is an Arrow 16RCR-27 rim housing an alternative to the 050251?
They serve different halves of the opening. The Arrow 16RCR-27 is a 6/7-pin SFIC rim housing for 24/25 Series devices, which is how a cylinder gets into the device for mechanical key control. The Von Duprin 050251 is an electronic switch for Von Duprin 22, 33A, 35A, 98, and 99 Series devices; its Signal Switch option watches both touchbar and latchbolt and carries a key switch output that requires an override at the door. If the requirement is a cylinder in a rim device, the housing is the part; if it is a signal back to an access control panel or horn, the 050251 is.
16) Our specification calls for a Grade 1 exit device accessory on a non-fire-rated opening. How does the Von Duprin 050251 line up against the other exit device parts we are pricing?
The Von Duprin 050251 is a Grade 1 commercial exit device part and is not fire rated. The Accentra 7110/7120 and 7110F top latch replacement components are likewise not fire rated. On a non-rated opening all three are consistent with that condition, so the deciding factor is function: the 050251 supplies RX, LX, or SS monitoring on a Von Duprin 22, 33A, 35A, 98, or 99 Series device, while the Accentra components restore latching on Accentra devices. Openings carrying a fire label need parts listed for that assembly.
How fast can I get the Von Duprin 50251 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 Von Duprin 50251 come with a warranty?
Absolutely. The Von Duprin 50251 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 Von Duprin 50251?
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 Von Duprin 50251 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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