Allen-Bradley – 440R-D22R2 – GuardMaster Dual-Input Safety Monitoring Relay

Manufacturer: Allen‑Bradley (Rockwell Automation) – GuardMaster series  

Model/MPN: R‑DR – Dual-input safety relay  

Inputs:  universal dual-channel safety inputs—compatible with safety mats, light curtains, emergency stops, etc.  

Safety Outputs:

• safety-related normally-open relay contacts (undelayed)

• normally-closed solid-state auxiliary output (diagnostic)  

Control Logic: Rotary-configurable AND/OR logic with support for manual or automatic reset modes  

Voltage & Power: Powered by  V DC; power consumption ~. W  

Safety Ratings: Meets ISO ‑ Category , PLe; SIL in safety circuits  

Form Factor: Compact DIN‑rail module (~ mm width), removable screw-clamp terminals, status LEDs

Certifications: CE, UL, cUL, KC, CCC; supported on  V DC industrial control systems