The MCK-1-4 from Alarm Controls is a mortise cylinder key switch with 1.75″ DPDT alternate, designed for reliability and security in access control systems. This durable switch features a stainless steel plate and is equipped with tamper-proof screws, ensuring robust performance in a variety of environments.
Alarm Controls MCK-1-4 Key Switch Features
- Stainless Steel Plate: Accepts Standard 1-1/8″ Mortise Cylinders for easy integration into existing systems.
- Compact Design: Depth behind Plate is 1.25″, allowing for installation in tight spaces.
- Color-Coded Leads: Switches Terminated in Colored Leads simplify wiring and troubleshooting.
- Reliable Performance: Switch Contacts Rated 4A @ 28VDC, ensuring dependable functionality in demanding applications.
- Versatile LED Operation: Operates on 12 or 24 Volts AC or DC, providing flexibility for various setups.
- Security Features: Tamper-Proof and Slotted-Head Screws Provided to prevent unauthorized access.
Alarm Controls MCK-1-4 Detailed Specifications
| Model | MCK-1-4 |
| Type | Mortise Cylinder Key Switch |
| Dimensions | 1.75″ Depth |
| Plate Material | Stainless Steel |
| Compatible Cylinder Size | 1-1/8″ |
| Depth Behind Plate | 1.25″ |
| Contact Rating | 4A @ 28VDC |
| LED Voltage | 12 or 24 Volts AC/DC |
| Screws | Tamper-Proof Slotted-Head Screws Provided |



















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