Alarm Controls MCK-5 MCK Series Mortise Cylinder Key Switch Station, SPDT Momentary, Single Gang, Green LED

For secure, dependable local access control and monitoring, the Alarm Controls MCK-5 mortise cylinder key switch delivers professional-grade performance in a compact single-gang package. This keyswitch from Alarm Controls by ASSA ABLOY features an SPDT momentary action ideal for door release, alarm reset or controlled equipment activation. The green LED operates on 12 or 24 VDC to provide a clear visual status for security personnel and surveillance systems. Built on a stainless steel faceplate with tamper-proof screws, the MCK-5 resists wear and vandalism in high-traffic or public-facing installations. It accepts a standard 1-1/8" mortise cylinder (not included) so you can integrate keyed different or keyed-alike cylinders to match your site’s access strategy. With a 4 A contact rating at 28 VDC and just 1.25" depth behind the plate, the unit fits easily into retrofit and new-construction single-gang boxes and interfaces cleanly with alarm panels, access control systems and monitoring equipment. Ideal for secure entrances, server rooms, and building control points — add the MCK-5 to your security specification or contact our sales team to discuss system integration.

• Provides secure, local control for access systems — momentary SPDT action allows reliable door release and alarm reset operations
• Durable stainless steel single-gang plate with tamper-proof screws reduces vandalism and maintains a professional installation
• Bright green LED indicator (12/24 VDC) gives clear visual confirmation of status for monitoring and surveillance stations
• Accepts standard 1-1/8" mortise cylinder (sold separately) for flexible keyed access options to fit existing master key systems
• Compact 1.25" depth and 4A @ 28 VDC contact rating support common electric strikes, relays and low-voltage locks
• Easy integration with access control, alarm and security monitoring systems for consistent field performance