Ifm electronic oge series through beam photoelectric sensor transmitter 8m ifm electronic ogs ookg us a through beam sensor transmitter that gives an 8m sensing range and a 600mm light spot diameter the sensor is designed for applications where reliable non contact detection of the exact position of objects is required the unit has an m18 x 1 threaded cylindrical body that is robust and long lasting ifm ogs ookg us ogs100 through beam sensor transmitter