Alarm Controls MCK-4 MCK Series Mortise Cylinder Key Switch Station, SPDT Momentary, Single Gang

Provide reliable, tamper-resistant manual control where it matters most. The Alarm Controls MCK-4 mortise key switch station delivers dependable momentary access control for secure doors, server rooms, and critical infrastructure. Designed for installers and security professionals, this SPDT momentary key switch stays active only while depressed, giving you precise control for door release, alarm reset or auxiliary equipment activation.

Built with a stainless-steel wall plate that accepts a standard 1-1/8" mortise cylinder, the MCK-4 offers rugged durability and an attractive finish for commercial environments. Contacts are rated 4A at 28 VDC, and LED options operate on 12/24 V for clear status indication when required. The compact single-gang design and color-coded leads simplify wiring and integration into access control, security and surveillance systems.

Ideal for access control panels, monitoring stations and perimeter security, the MCK-4 combines dependable performance with flexible configuration options (LEDs, pneumatic delay, weather cover). Add this Alarm Controls mortise key switch to your next security project — order now or contact us for configuration assistance.

• Secure, tamper-resistant manual access control ideal for doors, server rooms and restricted areas
• Durable stainless-steel wall plate accepts standard 1-1/8" mortise cylinders for easy retrofit and consistent aesthetics
• SPDT momentary action provides precise, momentary activation for controlled release or alarm reset operations
• Compact single-gang footprint simplifies installation and integrates with existing security, access control and monitoring systems
• Optional LED indicators and weather-resistant cover available to improve visibility and performance in diverse environments