SIPLUS S7-300 SM 331 8AE is based on 6ES7331-1KF02-0AB0 with conformal coating, operating temperature range of -25 to +70 °C, isolated 8AE, resolution of 13 Bit for voltage/current/resistance/Pt100, NI100, NI1000, LG-NI1000, PTC/KTY, 66 ms conversion time, 1x 40-pin. Like the CPU, the analog input modules are also protected against extreme environmental conditions. Thanks to the 100% conformal coating, they resist biological, chemical, and mechanically active substances, condensation, frost, and harmful gases. No matter the conditions, your analog signals will be reliably captured.