SIPLUS S7-300 SM321 8DI/120/230VAC -25...+70°C with conformal coating based on 6ES7321-1FF10-0AA0 . Digital input, electrically isolated, 8 DI, AC 120V/230V, 1x 40-pin, with individual rooting/channel Like the CPU, the digital input modules are also protected against extreme environmental conditions. Thanks to the 100% conformal coating, they can withstand biological, chemical and mechanically active substances, condensation, frost and harmful gases. No matter what the conditions - your digital signals are reliably recorded.
