The Siemens 3RG7652-3HD00 is a SIMATIC PXO230 M18S thru-beam sensor receiver, part of a rectangular-optics pair for through-beam detection. It operates on 10-30V DC, outputs NPN light-on at 150 mA, and connects via an M12 4-pole connector. The M18×72 barrel and IP67 rating suit it for washdown or dusty environments on packaging or material-handling lines.
The receiver pairs with a matching emitter (same series) for a through-beam setup. The 6m sensing range covers conveyor gaps or machine access zones. NPN light-on output means the load is active when the beam is uninterrupted — verify your PLC input card polarity before wiring. The M12 4-pole connector follows standard pinout: brown for V+, blue for V-, black for output, white unused. Keep cable runs under 10m to avoid voltage drop at 150 mA load.