The BOS 18E-X-RS20-S4 is a through-beam sensor housed in a stainless steel body with a glass sensing surface, in a Ø18 x 75mm format for nut mounting (M18x1). It operates from 10 to 30 VDC, connects via an M12x1 four-pin male connector, and offers a rated operating distance of 20000mm. Its IP68/IP67/IPx9K rating and Ecolab compliance suit installation in washdown and hygiene-sensitive industrial environments.
Key specifications
| IP Rating | IP68/IP67 / IPx9K |
| Compliance/Certifications | Ecolab cULus CE UKCA WEEE / IEC 60947-5-2 |
| Material: Housing / Grip | Stainless steel |
| Material: Sensing Surface / Contacts | Glass |
| Part Length (mm) | 75mm |
| Part Diameter (mm) | 18mm |
| Connection Type | M12x1 / Male / 4-pin |
| Tightening Torque | 40 Nm |
| Rated Operating Distance (mm) | 20000mm |
| Rated Insulation Voltage | 75 VDC |
| Operating Voltage | 10 - 30 VDC |
| Rated Voltage | 24 V |
| Mounting Type | Nut M18x1 |