Allen-Bradley R4F0018-Q Photoelectric Receiver

Allen-Bradley Guardmaster 440L-R4F0018-Q Photoelectric Receiver is the receiver half of a Guardmaster safety light curtain, used for perimeter guarding on industrial equipment. It operates from a 24 VDC supply and draws about 6 W, with a sensing range of 0.5 to 18 meters, and it features a terminal chamber with a cable gland (PG13.5 thread) for wiring. This receiver, part of the Guardmaster line, pairs with the 440L-T4F0018-Q transmitter to form a complete safety light curtain set that protects a defined zone from unauthorized access. The model number is 440L-R4F0018-Q, and distributor listings note that it was discontinued by the manufacturer around 2010, which can impact current availability and compatibility with newer Guardmaster components.