To provide a switch with easy detachment and attachment between an operation part and a contact part, further, capable of aiming at thinning and simplifying, since a conventional switch capable of dividing an operation part and a contact part requires extra efforts to mount the operation part onto a panel, thus a problem of which a rear-side dimension (a dimension toward a back direction of the panel) of the switch is made longer occurs, and a problem is such that a switch with a lock mechanism for fixing the operation part and the contact part with each other has a complex structure and the number of components becomes increased.

In the switch consisting of an operation part unit 5 and a contact part unit 12, and having a structure with the operation part unit 5 and the contact part unit 12 freely divided, an insertion hole 1b is fitted on a side surface of the operation part unit 5, while the contact part unit 12 is slid and inserted into the insertion hole 1b, the switch 13 is structured by coupling both the units.