System gesis® FLEX - The 2-fold shutter output 24 VDC/3 A, with flat surface mounted housing which can be fitted on in DIN rail for decentralized installation, is managed by the base module. It receives the internal supply from the upstream module. The 24 VDC supply is externally. The parameter set enables different automation functions. The electrical connections, which are pluggable in accordance with IEC 61535, separate automation and installation. All necessary plugs are enclosed.