SIPLUS S7-300 SM 322-20-pole based on 6ES7322-1BH01-0AA0 with conformal coating, -25…+70 °C, digital output isolated 16 DQ, 24 V DC, 0.5 A, total current 4 A/group (8 A/module) 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.