A remote controller includes a holder having a first surface and a second surface opposite the first surface, a first positioning boss and a second positioning boss protruding from the first surface and the second surface of the holder, respectively, a first wiring board provided over the first surface of the holder and having a first positioning hole formed therein, a second wiring board provided under the second surface of the holder and having a second positioning hole formed therein, an operation portion provided on at least one of the first wiring board and the second wiring board, a control circuit for transmitting a remote control signal according to an activation of the operation portion, and a case accommodating the first wiring board and the holder and having a third positioning hole formed therein.