WAGO Kontakttechnik 750-400 Digital Input Module

The WAGO Kontakttechnik 750-400 Digital Input Module is a 2-channel digital input unit in the WAGO-I/O-SYSTEM 750 family, designed to monitor 24V DC field signals and relay them to PLCs and control systems. It uses 1-Wire connection wiring and Cage Clamp technology, is DIN-rail mountable, and features integrated LED indicators for straightforward input status monitoring. Common applications include packaging machinery, conveyors, OEM automation equipment, process control skids, and factory control panels where 24 V DC digital inputs from proximity sensors, pushbuttons, limit switches, and safety interlocks must be reliably acquired. The module's industrial thermoplastic housing supports an industrial-rated operating range, and common replacements include 750-401, 750-402, and 750-430.