PNOZelog relays are modular, which means they can be configured and expanded to meet specific safety requirements. This flexibility allows you to tailor the system to your exact needs. They offer a range of safety functions including emergency stop, safety gates, and light curtains. http://www.pilz.com These relays ensure that all safety-related functions are monitored and controlled effectively. Safety relays solutions provider since 2011, We offer Pilz.