To facilitate assembling, and precisely keep caulked connection of a grounding terminal for a long time.

This switch comprises a resinous base 21 having a fixed contact, a movable board having a movable contact slidable with the fixed contact and capable of moving to the base 21, and a metallic case 7 fixed supporting the base 21 and movably supporting the movable board. A transmitting position of an automatic transmission is detected by the movable contact and the fixed contact. A fixing claw 11 caulking and fixing the base 21 and a grounding claw 59 caulking and connecting the grounding terminal 53 are protrusively provided on the case 7. The ground terminal 53 is protrusively provided on the base 21. The base 21 is fixed to the case 7 by caulking the fixing claw 11, and the ground terminal 53 is caulked and connected to the ground claw 59.