***spare part*** SIPLUS S7-1200 SM 1223 8DI/8DQ based on 6ES7223-1BH30-0XB0 with conformal coating, -25…+70 °C, digital input/output 8 DI/8 DQ, 8 DI 24 V DC, sink/source, 8 DQ, transistor 0.5 A Just like the CPU, the digital input and 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 recorded.