750-402 4-Channel Digital Input Module Manual

This document is the official product manual for the WAGO 750-402 and 750-402/025-000 4-channel digital input modules, which operate at 24 VDC with a 3 ms input filter and support high-side switching for 2- to 3-wire connections. It covers technical specifications, wiring interfaces, circuit diagrams, signal processing, process image, compatibility, connection examples, and detailed data sheets for both module variants.