In accordance with an aspect of the present disclosure, a remote control device includes a first housing; a first transmission circuit for emitting a first infrared light in a direction in which a first face of the first housing; a second transmission circuit for emitting a second infrared light in a direction in which a second face of the first housing; a window for covering at least part of the first transmission circuit and to transmit the first infrared light; a window button for covering at least part of the second transmission circuit and to transmit the second infrared light emitted; and a second housing, wherein the second housing covers a specified region of the first housing if the window button is coupled with hole of the second housing, and exposes the specified region outside the second housing if the window button is separated from the hole.