Alarm Controls MCK-5-2 MCK Series Mortise Cylinder Key Switch Station, SPDT Alternate, Single Gang, Green LED

Provide secure, dependable local control for doors and systems with the Alarm Controls by ASSA ABLOY MCK-5-2 mortise cylinder key switch. Designed for professional security and access control environments, this single-gang key switch combines a stainless-steel faceplate with tamper-proof screws to protect critical entry points and preserve a clean, commercial appearance. The MCK-5-2 accepts standard 1-1/8" mortise cylinders (sold separately), enabling keyed integration with your existing master or system keying. Its SPDT alternate action and 4A-rated contacts at 28VDC ensure consistent switching for electric strikes, mag locks, alarm inputs, and relay interfaces. A bright green LED that operates on 12 or 24 V AC/DC provides immediate visual status for monitoring and surveillance staff. Built and backed by Alarm Controls by ASSA ABLOY in the U.S., this durable keyswitch is ideal for access control panels, monitoring stations, and security consoles where reliability and tamper resistance matter. Upgrade your security infrastructure with a simple retrofit solution — add the MCK-5-2 to your next access control, monitoring, or surveillance deployment.

• Heavy-duty stainless steel faceplate for long-lasting, tamper-resistant mounting that improves durability and professional appearance
• Accepts standard 1-1/8" mortise cylinders for flexible keying and easy integration with existing access control keys
• Green LED status indicator compatible with 12/24 V AC/DC for clear visual monitoring of system state
• SPDT alternate action with 4A-rated contacts (28VDC) delivers reliable control of locks, alarms, or relay inputs
• Tamper-proof and slotted head screws included to reduce unauthorized removal and protect critical security points
• Single-gang form factor simplifies retrofit into standard electrical boxes for quick installation and serviceability