Alarm Controls MCK-4-3 MCK Series Mortise Cylinder Key Switch Station, DPDT Momentary, Single Gang

Deliver secure, tamper‑resistant access control where it matters most. The Alarm Controls by ASSA ABLOY MCK-4-3 Mortise Key Switch Station is a professional-grade key switch designed for commercial security, surveillance, and monitoring applications. Its stainless steel faceplate accepts standard 1-1/8" mortise cylinders, providing a durable, vandal-resistant interface for entry points. The DPDT momentary action offers dependable switching for locks and control circuits, with contacts rated at 4A @ 28VDC to handle most low-voltage access devices. Integrated LEDs operate on 12 or 24V AC or DC to give technicians and operators quick visual status for diagnostics and monitoring. With a shallow 1.25" depth behind the plate and included tamper-proof screws, the MCK-4-3 installs neatly into single-gang boxes and reduces retrofit complexity. Backed by a lifetime limited warranty from a trusted brand, this key switch station is ideal for access control panels, secure doors, gates, and perimeter systems. Add the MCK-4-3 to your security or access control project—order now or contact our sales team for volume pricing and technical support.

• Secure, tamper-resistant control for doors and gates with a stainless steel plate that accepts standard 1-1/8" mortise cylinders
• DPDT momentary switching rated 4A @ 28VDC for reliable access control and integration with security systems
• Built-in LEDs compatible with 12 or 24V AC/DC for clear status indication and easier monitoring/troubleshooting
• Single-gang, low-profile design with 1.25" rear depth simplifies retrofit installations and saves installation time
• Tamper-proof and slotted-head screws included plus a lifetime limited warranty to protect your security investment