Diffuse sensor SOEG-RTH-M18W-PS-S-2L With background suppression, round design, with 90ø angled beam Design=Round, Conforms to standard=EN 60947-5-2, Authorisation=(* RCM Mark, * c UL us - Listed (OL)), CE mark (see declaration of conformity)=to EU directive for EMC, Materials note=Free of copper and PTFE