The Safe Entry Exit safety system from SICK is the TÜV-certified alternative to classic muting: It reliably differentiates between humans and materials without additional muting sensor technology. Only a signal from the process controller is needed. As soon as the transport goods have passed the protective device, it is immediately ready again to protect humans from hazards. Depending on requirements, any type 4 electro-sensitive protective device (ESPE) can be combined with the software for the Flexi Soft safety controller from SICK or for Siemens S7 controllers. Thereby, the respective controller evaluates multiple material gates and provides the relevant diagnostic data for Industry 4.0 applications.