Alarm Controls MCK-3-2 Mortise Cylinder Key Switch, 1.75" SPDT Alternate
SKU
MCK-3-2
Model No
MCK-3-2
$78.68
Product Highlights
- Stainless Steel Plate Accepts Standard 1-1/8" Mortise Cylinders
- Depth behind Plate is 1.25"
- Switches Terminated in Colored Leads
- Switch Contacts Rated 4A @ 28VDC
- LEDs Operate on 12 or 24 Volts AC or DC

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The MCK-3-2 from Alarm Controls is a mortise cylinder key switch with a 1.75" SPDT alternate option, featuring both green and red LED indicators, designed for reliable access control and user-friendly operation.
Alarm Controls MCK-3-2 Key Switch Features
- Stainless Steel Plate: Accepts standard 1-1/8" mortise cylinders, ensuring compatibility and durability for long-term use.
- Compact Depth: Depth behind plate is 1.25", allowing for easy installation in various applications.
- Colored Leads: Switches are terminated in colored leads for straightforward wiring and installation.
- High-Rated Switch Contacts: Rated at 4A @ 28VDC, providing reliable performance for various electrical applications.
- Versatile LED Operation: LEDs operate on 12 or 24 Volts AC or DC, giving flexibility for system integration.
- Tamper-Proof Design: Features a tamper-proof and slotted-head screw for increased security and peace of mind.
Detailed Specifications for Alarm Controls MCK-3-2
| Feature | Details |
| Model | MCK-3-2 |
| Type | Mortise Cylinder Key Switch |
| Switch Type | 1.75" SPDT Alternate |
| Construction Material | Stainless Steel |
| Depth Behind Plate | 1.25" |
| Switch Contacts | 4A @ 28VDC |
| LED Voltage | 12 or 24 Volts AC or DC |
| Security Features | Tamper-Proof, Slotted-Head Screws |
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