欧姆龙OMRON光电传感器E3S-RS30E4 General-purposeMiniatureSensorsShortresponsetime:3ms.EasyadjustmentofsensitivityandopticalaxiswithSTABILITYandLIGHTindicators.Wire-selectableoperationmode.Mutualinterferenceprotectivecircuiteliminatescrosstalk(reflectivesensoronly).