A connector conducting electricity between external electrodes while the connector is being compressed, the connector including: a columnar main body made of an elastic dielectric; a first contact terminal made of an inelastic conductor including first and second electrode sections provided on a top surface and a side surface of the columnar main body and a coupling section interconnecting the first and second electrode sections; a second contact terminal made of an inelastic conductor including third and fourth electrode sections provided on a bottom surface and a side surface of the columnar main body and a coupling section interconnecting the third and fourth electrode sections, the fourth electrode section being disposed in a position in which the fourth electrode section does not contact the second electrode section; and a conductor provided outside the main body and conducting electricity between the second and fourth electrode sections.