SIPLUS S7-1500 DI 16x24VDC HF TX rail based on 6ES7521-1BH00-0AB0 with conformal coating, -40…+70 °C, OT4 with ST1/2 (+85 °C for 10 minutes), digital input module, 16 channels in groups of 16; input delay 0.05 ... 20 ms; input type 3 (IEC 61131); diagnostics, hardware interrupts SIMATIC ET 200MP is a modular and scalable I/O system with IP20 for universal use, and offers the same system advantages as the S7-1500. It permits the shortest bus cycle times and fastest response times, even with large volumes of data. The distributed I/O system is particularly easy to install, wire, and commission. Thanks to its scalable design, you can gear the IO station exactly to the on-site requirements. Just like the CPU, the digital input modules are also protected against extreme ambient conditions. Due to the 100% conformal coating they can withstand biologically, chemically and physically active substances, condensation, frost, and corrosive gases. Regardless of the conditions, your digital signals are reliably recorded.