A clutch for use in a steer-by-wire steering device for a vehicle is configured to switch between mechanically coupling and uncoupling a torque transmission path between a steering member operated by a driver and a wheel-turning unit configured to turn wheels. The clutch includes a position change member and a conduction path. The position change member is configured to change between a first position and a second position to switch between mechanically coupling and uncoupling the torque transmission path. The conduction path includes two points that come into contact with or separate from each other in accordance with positional change of the position change member. The conduction path is connected to an electric circuit configured to detect a change in a resistance value of the conduction path.