ifm Electronic OGS-OOKG/US OGS100

Connector (sensor): M12 (4-pin); IP rating: IP67; Max. operating voltage: 30 V DC; Max. range (open field): 8 m; Max. temperature: +60 °C; Min. operating voltage: 10 V DC; Min. temperature: -25 °C; Product size (length): 44 mm; Product size (Ø): 18 mm; Size (sensors): M18; Transmitter type: LED red; Wavelength: 645 nm

Price: 51.99 from Conrad Electronic