SIPLUS S7-300 SM 322 (-1BF01) based on 6ES7322-1BF01-0AA0 with conformal coating, -25…+70 °C, digital output SM 322, isolated, 8 DQ, 24 V DC, 2 A, 1x 20-pole 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.