A remote control device is disclosed. A single-piece casing has a first opening at one end, a second opening at another end, an inner cavity between the first and second openings, and a front opening and key openings in a front surface. A keypad is disposed within the inner cavity and has keys arranged on a surface of the keypad which extend through the key openings. A chassis body is inserted into the inner cavity though the first opening and below the keypad. The chassis has an end part located outside of the casing. An edge of the end part is configured to abut against one end of the casing. An end insert body is inserted into the inner cavity though the second opening, below the body of the chassis. The end insert has an end part located at the another end of the casing.