The Pilz 312400, also known as PSSu E S 4DI, is a high-quality electronic module that is part of the PSSuniversal I/O modules range. This standard module is equipped with 4 digital inputs, making it a versatile choice for various industrial applications. It operates with a DC voltage input of 24V and features potential isolation inputs for enhanced safety. The module is designed to withstand a wide range of environmental conditions, with an operating temperature range of 0 - 60 °C and a humidity rating of 93% r.h. at 40 °C. The Pilz 312400 is CE, UKCA, BG, cULus Listed, and TÜV approved, ensuring its compliance with international standards. Its compact dimensions and lightweight design make it easy to install and integrate into existing systems. This module is a reliable and efficient solution for your automation needs.