SIPLUS S7-300 SM 331 8AI 40-pole based on 6ES7331-7PF11-0AB0 with conformal coating, 0…+60 °C, analog input isolated, 8 AI thermocouples type B, E, J, K, L, N, R, S, T TXK/TXK (L) according to GOST 16-bit, 50 ms, 1x 40-pole Just like the CPU, the analog 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 analog signals are reliably recorded.