SIRIUS, interface module PROFINET interface for safety relays 3SK2 from E05 and 3RK31 from E04 PROFINET IO interface 100 Mbit/s, RJ45 22.5 mm width Spring-loaded terminal parameterizable via Safety ES without connecting cable SIRIUS 3SK2 interface module for connecting the 3SK2 safety relays via PROFINET. No special programming cable is required with the interface module, as parameterization and diagnostics can also be carried out via PROFINET. The 3RK35 interface modules can be used for the connection via PROFIBUS, and the 3SK25 modules for PROFINET. Both are available with screw and spring-loaded connections. The 3UF7930-0AA00-0 connecting cable to the basic device must be ordered separately. Safety is a SIRIUS business.