Key features of the 440R-N23135 safety relay include:

Safety Functions: The relay offers various safety functions, such as monitoring emergency stop buttons, safety interlock switches, safety light curtains, two-hand control devices, and other safety devices.

Inputs and Outputs: It typically has multiple input channels for connecting safety devices and multiple output channels for controlling safety-related equipment. The specific number of inputs and outputs may vary depending on the specific variant of the relay.

Self-Checking Circuitry: The relay incorporates self-checking circuitry that continuously monitors internal components and can detect faults or failures.

Diagnostic LEDs: The relay is equipped with diagnostic LEDs that provide visual indication of input status, output status, and fault conditions. This makes it easy to monitor and troubleshoot the safety system.

Mounting Options: The 440R-N23135 relay is typically available in a compact DIN rail mountable enclosure, allowing for easy installation in control panels or other suitable locations.