NCE 524-200 AIU01 Auxiliary Input Unit – DCC Input Interface

The NCE 524-200 AIU01 Auxiliary Input Unit connects the physical world to your NCE DCC system. Plug buttons, toggle switches, reed switches, block detectors, or other contact-closure sensors into its input terminals, and the AIU01 translates those signals into DCC accessory commands — triggering turnout changes, signals, lighting effects, or any automation sequence your layout needs. It's the essential bridge between hands-on layout controls and the NCE cab bus network.

Arizona Hobbies is an authorized NCE dealer in Tucson, AZ, and stocks the complete NCE layout automation and accessory line.

• Multiple Input Channels — accepts push buttons, toggle switches, reed switches, and contact-closure sensors
• DCC Event Triggering — converts physical inputs into DCC accessory commands on your cab bus
• Cab Bus Connection — plugs directly into the NCE cab bus network with RJ connector
• Screw Terminal Wiring — clean, secure connections for all external inputs
• Layout Automation — enables automatic signaling, turnout sequencing, and interactive layout control
• Compact PCB — mounts under benchwork or inside a panel with minimal footprint