SDC 440 Series Large Mushroom Button Switches

Heavy-Duty Large Mushroom Push Button Switches for Exit and Emergency Applications

The SDC 440 Series Large Mushroom Button Switches are heavy-duty industrial switch assemblies designed for reliable, easy activation in demanding environments. Featuring a conspicuous 2-5/8" diameter mushroom button and weather-resistant contacts, these switches provide a highly visible and accessible solution for exit control, request-to-exit (REX) applications, and emergency or panic alarm activation.

Built to withstand impact and frequent use, the large mushroom button is designed for quick and intuitive operation, even by individuals unfamiliar with the egress system. The double-gang assembly features a heavy-duty steel bezel that helps protect the button against physical abuse, making it ideal for commercial, industrial, and high-traffic applications.

With multiple switching configurations available, the SDC 440 Series delivers dependable performance for access control and emergency release systems.

Standard Features

• 2-5/8" large mushroom push button for easy activation

• Heavy-duty industrial construction designed to withstand impact

• Weather-resistant contacts for reliable operation

• Ideal for high-frequency and demanding applications

• Suitable for exit, request-to-exit (REX), and emergency/panic alarm functions

• Double-gang assembly with heavy-duty steel bezel for added protection

• Screw terminal wire connections for convenient installation

• Standard red button for high visibility

Available Models

Optional Features

• Green mushroom button

• Visual status indicator (LED)

• Alternative signage options

Applications

The SDC 440 Series Large Mushroom Button Switches are suitable for a wide range of commercial and industrial applications, including:

• Access control systems

• Request-to-exit (REX) systems

• Emergency door release applications

• Panic alarm activation

• Commercial building egress systems

• Industrial facilities and high-traffic environments

Reliable Emergency and Access Control Switching

Designed for durability, visibility, and ease of operation, the SDC 440 Series is an excellent choice for applications requiring a large, easy-to-activate push button. Its rugged construction and flexible switching configurations make it a dependable solution for emergency release, access control, and industrial switching requirements.

Choose the SDC 440 Series Large Mushroom Button Switches for dependable, heavy-duty performance in commercial and industrial access control applications.