Input Modules

Input Modules — New & Used

Input modules (sometimes called input I/O modules or distributed I/O) enable machines and control systems to reliably receive signals from sensors, switches, and field devices. Whether digital, analog, or specialty signals, these modules bridge the gap between field hardware and PLCs or automation systems.

At Surplus Select, we offer a broad inventory of new and used OEM input modules from trusted automation brands. Stock rotates frequently, giving control panel builders, OEMs, and maintenance teams access to surplus-pricing on high-quality I/O hardware suited for factory floors and machine control networks.

Price Match — We match any authorized distributor on identical in-stock parts, so you can source parts at surplus pricing with distributor-level assurance.

Trade-In Credit — Have quality new surplus items? Trade them in for store credit toward the parts you actually need.

Fast U.S. Shipping — Most orders ship same or next business day from our U.S. warehouse to keep your line running.

Find Your Input Module Fast (Search-First)

Search your part number (e.g., 1756-IB16C, 24V digital input module, 8-ch analog input module).
No PN? Try specs: “digital input module 24 V DC”, “analog input module 0-10 V”, or “distributed I/O input module”.
Need a specific protocol or mounting style? Add details like EtherNet/IP, DIN rail, IP67 on-machine to your search.

Applications & Use Cases

Automation & machine control: Collect signals from sensors (proximity, pressure, flow, temperature) via input modules to feed into PLCs and control systems. :contentReference[oaicite:0]{index=0}
Panel building & retrofits: Use input modules to add I/O capability, replace obsolete modules, or consolidate I/O boards.
Distributed and on-machine I/O: Rugged input modules allow sensors and logic to be placed closer to field devices, reducing wiring and improving response times. :contentReference[oaicite:1]{index=1}
Legacy system integration: Input modules help integrate older sensors or equipment into modern networks and control systems. :contentReference[oaicite:2]{index=2}
MRO & spare parts: Keep replacement input modules on hand to minimize downtime when I/O modules fail or when plant expansions require additional input channels.

Why Buy Input Modules from Surplus Select

New & Used Options: OEM input modules for automation, machine builders, and maintenance at surplus pricing.
Wide Compatibility: Digital and analog input modules, 24V DC or AC, for major brands and protocols—perfect for panel integrations or machine I/O upgrades.
Surplus Value Offering: Many units are unused surplus or lightly used pulls, helping reduce replacement costs and spare-part budgets.
Fast Shipping: Most orders ship same or next business day to keep your systems running and downtime minimized.