PSR Safety Relay, E-Stop & Safety Door Monitoring - Phoenix Contact The PSR classic safety relays for single or two-channel emergency stop (E-Stop) and safety door monitoring from Phoenix Contact can be connected easily without the need for additional settings on the relay. They are an excellent solution when your system or machine only requires a few reliable safety functions. Features and Benefits: • Large selection of safety functions
• 1 signalling current path
• Manual monitored and automatic activation in one
• Basic or reinforced insulation
• Screw or spring-cage connection available
• Able to switch functions easily
• LED status display for fast wiring and clear diagnostics
• Fast installation and start-up