Phoenix Contact 2700499 A safety relay for emergency stops and safety doors is available with various configurations, including up to SIL 3, Cat. 4, and PL e ratings, offering both automatic and manual start options. It can be operated using one or two channels and features cross-circuit detection for enhanced safety. The system also includes monitored start capabilities and has two enabling current paths. The device is compatible with US voltage DC power at 24V and comes equipped with a plug-in push-in terminal block, making it suitable for various applications requiring high levels of safety and reliability.