PDQ 639719 Signal Switch (for ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$148.51
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PDQ 639719 Signal Switch (for fire rated device)

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Model: 639719

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

$148.51
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PDQ 639719 Signal Switch (for fire rated device)

Replacement Parts for PDQ 6300 and 6400 Series Exit Devices

PDQ part number 639719: Signal Switch (for fire rated device). A genuine PDQ part.

These are factory replacement and conversion parts for PDQ 6300 Series wide stile and 6400 Series narrow stile exit devices, covering rim, surface vertical rod, concealed vertical rod and mortise configurations. The range includes head chassis assemblies, latchbolts, rods and connectors, push bars, covers and end caps, strikes and shims, dogging and alarm conversion kits, screwpacks and signal switches, so an existing device can be serviced or upgraded without replacing the whole unit.

Key Features

  • Genuine PDQ parts for 6300 Series wide stile and 6400 Series narrow stile exit devices
  • Covers rim, surface vertical rod, concealed vertical rod and mortise device configurations
  • Panic rated and fire rated head chassis available for replacement
  • Conversion kits add cylinder dogging or an alarm to an installed device
  • Strikes, shims, drill guides and screwpacks for installation and adjustment

Technical Specifications

  • Manufacturer Part Number: 639719

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Group:
Parts and Accessories
Product Subgroup:
Replacement Parts
Product Type:
Replacement Part
Product Category:
Parts and Accessories
Product Model:
639719
Commercial/Residential:
Commercial
Tags:
pdq 639719, 639719 pdq, 639719
Subcategory:
Parts and Accessories
Parts and Accessories Type:
Switch
Series:
6300 Series

PDQ 639719 – Frequently Asked Questions

1) What is PDQ part 639719?
PDQ 639719 is a signal switch for a fire rated exit device, sold as a genuine PDQ factory replacement part. It is one of the service parts for PDQ 6300 Series wide stile and 6400 Series narrow stile exit devices, used where a device needs to signal its status rather than be replaced outright.
2) Will the PDQ 639719 signal switch work on a panic rated exit device, or only a fire rated one?
The 639719 is specified as the signal switch for a fire rated device. If you are working on a panic rated (non-fire) PDQ 6300 or 6400 Series device, this is not the matching switch part, so confirm the head chassis on the door is fire rated before ordering this one. Fire rated and panic rated head chassis are separate parts in the PDQ service range.
3) Can I add an alarm or signal to a PDQ exit device already hung on the door, or do I have to replace the whole device?
You do not have to replace the device. PDQ supplies conversion kits that add cylinder dogging or an alarm to an installed 6300 or 6400 Series device, and signal switches like part 639719 are part of that service range, so an existing unit can be serviced or upgraded in place.
4) What part number do I order for a PDQ fire rated exit device signal switch?
Order PDQ 639719. That is the manufacturer part number for the signal switch used on a fire rated PDQ exit device, and it is a genuine PDQ part rather than an aftermarket substitute.
How fast can I get the PDQ 639719 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 PDQ 639719 come with a warranty?
Absolutely. The PDQ 639719 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 PDQ 639719?
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 PDQ 639719 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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