The Siemens 3RG7650-3GB00 is a SIMATIC PXO210 M18S diffuse photoelectric sensor with energetic rectangular optics. It operates on 10-30V DC, provides a 500mm sensing range, and outputs NPN light-on switching at 150mA. The housing is M18x72mm with an M12 4-pole connector and IP67 rating.
The 500mm sensing range is the maximum detection distance for a standard white target under diffuse mode; actual range varies with target reflectivity and background. NPN output is a sinking configuration — verify the PLC input module accepts sinking signals. The 150mA load rating covers most direct-drive inputs but not solenoids or contactor coils without an interposing relay. M12 4-pole connector is standard for industrial sensors; pinout is typically pin 1 brown (V+), pin 3 blue (V-), pin 4 black (output), pin 2 white (unused or teach). IP67 allows washdown and dusty environments but not submersion.