Thru-beam sensor (pair) OBE25M-R201-S2EP-IO-0, 3M-V31 OBE25M-R201-S2EP-IO-0, 3M-V31 Medium design with versatile mounting options IO-link interface for service and process data Various frequencies for avoiding mutual interference (cross-talk immunity) Extended temperature range-40°C... 60°C High degree of protection IP69K