Generalized association rules to support Network Digest analysis

An improved switch unit for use, for example, in a motor vehicle in which a first and a second switch mechanisms are integrally incorporated together with a first and a second operating members for operating the switch mechanisms so as to reduce the space to be occupied by the switch unit on the whole, while the first operating member is arranged to be rotatable in association with the depression of the second operating member for elimination of troublesome operating procedures, with simultaneous simplification of the entire construction.