Allen-Bradley 440R-M23088 Relay, GuardMaster, MSR138.IDP, Single Function, Safety, with Time Delay Outputs, 24V AC/DC, 1 or 2 Normally Closed, For Light Curtains, Inputs, 2 Normally Open Safety Outputs, 2 Normally Open Safety Outputs, Time Delayed, 1 Normally Closed, Auxiliary Outputs Time Delayed, 0.5 – 10 Seconds, Time Delay, Removable Terminals, Auto/Manual or Supervised Manual, Reset