A remote controller comprising: a housing including a through-hole; a tilt switch (121j, 121k) accommodated in the housing and including a first extending portion (121k1) extending in a direction and configured to receive a user's input, a second extending portion (121k2) extending and protruding in a direction different from the direction of the first extending portion, a third extending portion (121k3) extending and protruding in a direction different from the direction of the second extending portion, and a fourth extending portion (121k4) extending and protruding in a direction different from the direction of the first extending portion; a flexible layer located under the second extending portion, the third extending portion and the fourth extending portion and including a first protrusion formed at positions opposite to the second extending portion(121k2) and the third extending portion (121k3) to protrude and a plurality of second protrusions protruding in a direction opposite to a protruding direction of the first protrusion and corresponding to the second extending portion (121k2), the third extending portion (121k3) and the fourth extending portion (121k4) respectively; a plurality of metal domes located under the second protrusions and configured to be in contact with one surface of the second protrusions; and a plurality of contacts mounted on a printed circuit board, located under the plurality of metal domes and configured to be in contact with the other surfaces of the plurality of metal domes, wherein a part of the first extending portion (121k1) is exposed to an outside through the through-hole. a housing including a through-hole; a tilt switch (121j, 121k) accommodated in the housing and including a first extending portion (121k1) extending in a direction and configured to receive a user's input, a second extending portion (121k2) extending and protruding in a direction different from the direction of the first extending portion, a third extending portion (121k3) extending and protruding in a direction different from the direction of the second extending portion, and a fourth extending portion (121k4) extending and protruding in a direction different from the direction of the first extending portion; a flexible layer located under the second extending portion, the third extending portion and the fourth extending portion and including a first protrusion formed at positions opposite to the second extending portion(121k2) and the third extending portion (121k3) to protrude and a plurality of second protrusions protruding in a direction opposite to a protruding direction of the first protrusion and corresponding to the second extending portion (121k2), the third extending portion (121k3) and the fourth extending portion (121k4) respectively; a plurality of metal domes located under the second protrusions and configured to be in contact with one surface of the second protrusions; and a plurality of contacts mounted on a printed circuit board, located under the plurality of metal domes and configured to be in contact with the other surfaces of the plurality of metal domes, wherein a part of the first extending portion (121k1) is exposed to an outside through the through-hole.