The IEEE Sensors Council has no individual members. It has only member societies; 26 of them.
Per the IEEE Technical Activities Operations Manual, “4.1.B. IEEE Technical Councils IEEE Technical Councils may be established by the IEEE Technical Activities Board for the purpose of providing a continuing mechanism for two or more IEEE Societies, called Member Societies, to work together in a multi-disciplinary technical area of mutual interest, primarily through conferences and publications. A technical council has Member Societies but no individual members. In all respects except membership, a Technical Council operates generally like a Society. The representatives on the Technical Councils, are to be designated by the Member Societies, and are to elect their own President and other officers. Other policies and operational details shall be specified by each Technical Council. (excerpt from IEEE Bylaw I-401.) Creation of a new IEEE Technical Council must be endorsed by the IEEE Technical Activities Board, and approved by the IEEE Board of Directors.”