SIPLUS S7-300 SM 322 8RO 40pol based on 6ES7322-5HF00-0AB0 with conformal coating, 0…+60 °C, digital output isolated, 8 DQ (relay), 1x 40-pole, 24 V DC, 120-230 V AC, 5 A with RC filter overvoltage protection Just like the CPU, the digital output 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 output.