You may also like
PDQ 6400V Narrow Stile Surface Vertical Rod Exit Device, Panic Rated
Model: PDQ-6400V
PDQ 6400V Narrow Stile Surface Vertical Rod Exit Device, Panic RatedGrade 1 Narrow Stile Surface Vertical Rod Exit DeviceThe PDQ 6400V is a Grade 1 surface vertical rod exit device for narrow stile...
PDQ
Starting at
$992.94
PDQ 639718 Signal Switch (for panic rated device)
Replacement Parts for PDQ 6300 and 6400 Series Exit Devices
PDQ part number 639718: Signal Switch (for panic 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: 639718
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:
- 639718
- Commercial/Residential:
- Commercial
- Tags:
- pdq 639718, 639718 pdq, 639718
- Subcategory:
- Parts and Accessories
- Parts and Accessories Type:
- Switch
- Series:
- 6300 Series
PDQ 639718 – Frequently Asked Questions
1) What exactly is PDQ part 639718?
PDQ 639718 is a signal switch for a panic rated exit device, sold as a genuine factory replacement part. It is the switch component used to signal device operation, not a complete alarm kit and not a latch or chassis part.
2) Which PDQ exit devices does the 639718 signal switch fit?
It is a factory part for PDQ 6300 Series wide stile and 6400 Series narrow stile exit devices, covering rim, surface vertical rod, concealed vertical rod and mortise configurations. It is specified for panic rated devices.
3) Can I use the 639718 switch on a fire rated PDQ exit device?
The 639718 is designated for panic rated devices. PDQ lists panic rated and fire rated head chassis separately, so for a fire rated device use the part called out for that configuration rather than assuming this switch carries over.
4) Do I have to replace the whole exit device to add or repair a signal switch?
No. PDQ supplies the 639718 switch as a service part so an installed 6300 or 6400 Series device can be repaired or upgraded in place. Alarm and cylinder dogging conversion kits are offered the same way, which keeps the door prep, trim and rods untouched.
5) Is the PDQ 639718 switch a commercial-grade part or for residential doors?
It is a commercial door hardware part, intended for panic hardware on commercial openings such as schools, healthcare and multi-family common doors rather than residential use.
6) Will an aftermarket switch work in place of PDQ 639718?
Order the PDQ part number 639718. It is a genuine PDQ component matched to the 6300 and 6400 Series chassis, and the mounting and wiring in those devices are specific to the factory part.
How fast can I get the PDQ 639718 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 639718 come with a warranty?
Absolutely. The PDQ 639718 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 639718?
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 639718 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.