The PNOZsigma series from Pilz is indeed a robust line of safety relays designed to ensure the safety of machinery and industrial systems. http://www.pilz.com PNOZsigma relays are used to monitor safety functions like Emergency Stops (E-STOP), safety gates, light barriers, and other safety-related inputs. Safety solutions provider since 2011, We offer Pilz.
The PNOZ S2 is a specific model within the PNOZsigma series. It is designed to manage one safety function at a time, which makes it versatile for various applications but means that for multiple safety functions, multiple relays would be used. Monitors emergency stop circuits to ensure that machinery stops safely in case of an emergency.