ACSI K-127 Latch Bolt Monitor ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$90.00
$57.15
ACSI ACSI K-127 Latch Bolt Monitor Switch for ACSI 1500K-VD ELR Kit on Von Duprin 33A, 35A. 98, 99 Series ACSI-K-127

ACSI K-127 Latch Bolt Monitor Switch for ACSI 1500K-VD ELR Kit on Von Duprin 33A, 35A. 98, 99 Series

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Model: K-127
From the 1500 Series Collection

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

$90.00
$57.15
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ACSI K-127 LATCH BOLT MONITOR SWITCH FOR ACSI 1500K-VD ELR KIT ON VON DUPRIN 33A, 35A. 98, 99 SERIES OVERVIEW

K-127 Latch Bolt Monitor Switch for ACSI 1500K-VD ELR Kit on Von Duprin 33A, 35A. 98, 99 Series. ACSI Series K Switch Kits are field installed in exit devices. Series K Switch Kits include a SPDT (Single Pole Double Throw) switch assembly with long wire leads and easy-to-follow installation instructions. K Switch Kits may be used to:

  • Provide instant release of magnetic locks for free egress.
  • Activate a door alarm.
  • Signal a control console when the push bar of an exit device is depressed.
  • Shunt a door alarm to allow free egress.

Buy the ACSI K-127 Latch Bolt Monitor Switch for ACSI 1500K-VD ELR Kit on Von Duprin 33A, 35A. 98, 99 Series for easy installation and dependable door hardware solution.

ACSI ELECTRIC EXIT DEVICE SWITCH KITS COLLECTION

ACSI ACSI K-100 Request To Exit Switch Kit for Von Duprin 33A, 35A, 98, 99 Series
ACSI K-200 Request To Exit Switch Kit for Von Duprin 33A, 35A, 98, 99 DPDT Series
ACSI K-101 Request To Exit Switch Kit for Von Duprin 55 Series
ACSI K-102 Request To Exit Switch Kit for Von Duprin 88 Series
ACSI K-103 Request To Exit Switch Kit for Sargent 80 Series Series
ACSI K-203 Request To Exit Switch Kit for Sargent 80 Series DPDT Series
ACSI K-104 Request To Exit Switch Kit for Sargent 9600, 9700, 9800, 9900 Series
ACSI K-105 Request To Exit Switch Kit for Sargent 9300, 9400, 9500 Series
ACSI K-106 Request To Exit Switch Kit for Adams Rite 8000, 3000 Series
ACSI K-107 Request To Exit Switch Kit for Corbin Russwin 8000 and Yale 2100 Series
ACSI K-108 Request To Exit Switch Kit for Jackson 1085, 1095 Series
ACSI K-109 Request To Exit Switch Kit for Yale 7000 and Corbin Russwin ED4000, ED5000 Series
ACSI K-110 Request To Exit Switch Kit for Monarch 18, 19 Series
ACSI K-111 Request To Exit Switch Kit for Doromatic 990, 1090 Series
ACSI K-112 Request To Exit Switch Kit for Doromatic 1490, 1590 Series
ACSI K-124 Request To Exit Switch Kit for Precision 2000 Series Series
ACSI K-125 Request To Exit Switch Kit for Dorma 9000 Series
ACSI K-126 Request To Exit Switch Kit for Hager 4500, 4600 and PDQ 6200 and Stanley Commercial QED100, 200, 300 Series
ACSI K-226 Request To Exit Switch Kit for Hager 4500, 4600 and PDQ 6200 and Stanley Commercial QED100, 200, 300 DPDT Series
ACSI K-128 Request To Exit Switch Kit for Design 1000 Series
ACSI K-129 Request To Exit Switch Kit for Falcon 24, 25 Series
ACSI K-130 Request To Exit Switch Kit for Jackson 20 Series
ACSI K-131 Request To Exit Switch Kit for Falcon 1690, 1790 Series
ACSI K-123 Latch Bolt Monitor Switch Kit for Von Duprin 33A, 35A, 98, 99 Series
ACSI K-127 Latch Bolt Monitor Switch for ACSI 1500K-VD ELR Kit on Von Duprin 33A, 35A. 98, 99 Series

Product Specs

Subcategory:
Electric Exit Device Switch Kits
Series:
1500 Series
Collection:
1500 Series
Product Type:
Exit Device Field Install Kits
Compatibility:
ACSI 1500K-VD ELR Kit on Von Duprin 33A, 35A. 98, 99 Series
Commercial/Residential:
Commercial
Electronic:
Yes
Lock Function:
Part/Component
Product Group:
Electronic Access Controls
Product Subgroup:
Sensors, Switches, Relays and Timers
Parts and Accessories Type:
Installation Accessories
Product Attribute:
Parts and Accessories
Product Function:
Part/Component
Fire Rating:
No
Product Category:
Electronic Access Control
Department:
Door Hardware

ACSI K-127 – Frequently Asked Questions

1) What does the ACSI K-127 latch bolt monitor switch actually do on a Von Duprin exit device?
The K-127 is a field-installed SPDT switch assembly that monitors the latch bolt on a Von Duprin exit device and reports its position back to your access control or alarm system. In practice that signal is used to instantly release a magnetic lock for free egress, trigger a door alarm, shunt an alarm so egress does not cause a nuisance trip, or tell a control console that the push bar was depressed. It ships with long wire leads and installation instructions, so an integrator can add monitoring to a device already hanging on the door instead of replacing it.
2) Which exit devices does the ACSI K-127 switch kit fit?
The K-127 is built for the ACSI 1500K-VD ELR kit installed on Von Duprin 33A, 35A, 98 and 99 Series exit devices. It is not a universal switch. ACSI builds a separate kit per device family, so if the door has a Sargent, Falcon, Precision, Dorma, Adams Rite or other brand of device, the K-127 is the wrong part and you need the kit matched to that device.
3) Do I need the ACSI 1500K-VD ELR kit before I can use the K-127?
Yes. The K-127 is a component, not a standalone device. It is specified for the ACSI 1500K-VD ELR kit on Von Duprin 33A, 35A, 98 and 99 Series devices, meaning it goes in alongside that electric latch retraction kit. If you only want latch bolt monitoring on a Von Duprin 33A, 35A, 98 or 99 device without the ELR kit, ACSI's K-123 latch bolt monitor switch kit is the version written for that device family on its own.
4) I have Von Duprin 55 Series and 88 Series devices in the same building. Will the K-127 work on those too?
No, and this is where an order goes wrong on a standardization job. The K-127 is tied to the Von Duprin 33A, 35A, 98 and 99 Series. ACSI publishes the K-101 for Von Duprin 55 Series and the K-102 for Von Duprin 88 Series. If your property has a mix, you order per device family rather than buying one kit for the whole fleet.
5) Is the ACSI K-127 switch kit rated for a fire door?
No. The K-127 latch bolt monitor switch carries no fire rating. On a fire rated opening, the exit device and any field modification to it have to stay within the device manufacturer's listing, so a non-rated field kit is not the part to put on that door.
6) Can a K-127 monitor switch be added to an exit device already installed on the door?
That is what it is made for. ACSI Series K switch kits are field installed in exit devices, so the K-127 goes into a Von Duprin 33A, 35A, 98 or 99 device running the 1500K-VD ELR kit without swapping the device out. The kit comes with the switch assembly, long wire leads and installation instructions. Plan on pulling the device off the door to get at the latch area and running the leads through the frame to your panel.
7) Is the ACSI K-127 a dry contact I can wire straight into my access control panel?
The K-127 provides a SPDT (single pole double throw) switch assembly, so you get a common, a normally open and a normally closed leg and can wire the input either way your panel or alarm board expects. Long leads are supplied with the kit for the run back to the device wiring. Note that ACSI's DPDT versions, like the K-200 for the same Von Duprin families, exist for jobs that need two independent circuits off one switch.
8) Is the ACSI K-127 switch kit suitable for a commercial building or is it a residential part?
Commercial only. The K-127 is a commercial grade electronic accessory built for Von Duprin exit devices, which are themselves commercial panic hardware. It belongs on institutional, retail, healthcare, education and multi-family egress doors tied into an access control or alarm system, not on a residential entry.
9) How many versions of the ACSI K-127 are there, and does it need handing?
One. The K-127 latch bolt monitor switch is sold as a single model with no finish, size or handing options to specify, because it mounts inside the exit device chassis where it is never seen. The only thing you match is the device: Von Duprin 33A, 35A, 98 or 99 Series carrying the ACSI 1500K-VD ELR kit.
How fast can I get the ACSI K-127 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 ACSI K-127 come with a warranty?
Absolutely. The ACSI K-127 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 ACSI K-127?
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 ACSI K-127 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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