An electronic device includes a first part. The electronic device also includes a second part that is configured to move with respect to the first part. The electronic further device includes a magnetic member that is disposed on one of the first part and the second part. Additionally, the electronic device includes a sensor that is disposed on the other one of the first part and the second part and facing the magnetic member. The magnetic member includes a body extending in a movement direction of the second part and magnets respectively disposed at both ends of the magnetic member such that different polarities are close to each other.