Some key features of the 440R-N23120 safety relay may include:

Input Channels: The relay typically has multiple input channels to monitor safety devices such as emergency stop buttons, safety switches, light curtains, interlock switches, and other safety devices.

Output Channels: The safety relay provides output channels to control safety-related devices such as motor starters, solenoid valves, and other safety-related equipment.

Safety Functions: It offers commonly used safety functions like safety monitoring of input devices, redundant and monitored enabling contacts, cross-circuit monitoring, and time delay functions.

Diagnostic and Status Indicators: The relay may have LED indicators to provide diagnostic information and status indication for easy troubleshooting and monitoring.

Wiring and Installation: The safety relay is designed for easy integration into safety control systems and typically features screw terminals for reliable and secure wiring connections.