The Siemens 3RG7202-2CC03 is a SIMATIC PXO630 K80 thru-beam sensor receiver — the side that catches the beam from a separate emitter, not a self-contained unit. It runs on DC 10-36V, puts out a PNP antivalent signal (two complementary outputs), and can sink up to 200 mA. The M18 4-pole connector mates to standard micro-style cables, and the IP67 rating means it survives washdowns and dusty environments.
The DC 10-36V supply range covers standard 24 VDC control systems with headroom for brownout conditions. The PNP antivalent output gives you both a normally-open and normally-closed signal on separate pins — handy for feeding a PLC input and a status indicator without extra wiring. 200 mA drive is enough for small relays or indicator loads, but don't plan on driving contactor coils directly. The M18 connector is a standard 4-pin micro-style; check your cable assembly for pinout compatibility — the 'no standard layout' note in the description means the pin assignment may not follow the usual M18 convention, so verify against the sensor's wiring diagram before terminating.