The 440R-M23147 safety relay features a single function design with 1 N.C. and 2 N.C. contacts, plus light curtain input capability. It provides 2 N.O. safety outputs and 3 N.O. delayed safety outputs with adjustable delay time of 0.5-10 seconds. The unit supports both auto and manual monitored reset modes, operates on 24 VAC/DC power supply, and comes with removable screw terminals. Note: Factory warranty is not applicable, but the product includes a 2-year warranty from RADWELL.