The Siemens 3RG7652-0GB00 is a SIMATIC PXO230 M18S thru-beam sensor receiver with rectangular optics, housed in an M18×59 mm barrel. It runs on 10-30V DC, outputs NPN light-on, and sinks up to 150 mA. The fixed 2-meter PUR cable (3×0.34 mm²) brings power and signal; IP67 sealing handles washdown areas.
The 6-meter sensing range is the thru-beam pair's maximum under ideal conditions; real-world range drops with dust, misalignment, or target reflectivity. NPN light-on output pulls low when the beam is uninterrupted — standard for PLC sinking inputs. The 150 mA load rating covers most small relays and PLC input modules directly; if driving a larger contactor coil, interpose an interface relay. PUR jacket resists oil and abrasion better than PVC, so it holds up in machine-tool coolant splash.