The Siemens 3RG7134-0AB00 is a SIMATIC PXO250 M18 diffuse photoelectric sensor with background suppression, operating at 10-36 V DC and sensing 10-120 mm. Output is PNP light-on, rated 200 mA, terminated with a 2 m PUR cable (3x0.34 mm²).
The 10-120 mm sensing range with background suppression means it detects objects within that window while ignoring reflective backgrounds beyond it — useful on conveyors or packaging lines where the belt or backstop could cause false triggers. The PNP light-on output is normally off when dark; it switches high when the target is present. The 2 m PUR cable is oil- and abrasion-resistant, rated IP67 for washdown or dusty environments.