The wall-mount remote controller includes a base fixable to a wall W and a cover releasably attached to the base, having a box shape with an open rear, and covering a front surface of the base. The cover includes a bottom surface having an insertion opening therethrough. In a lower front of the base, a spring hook is disposed. The spring hook includes a support extending frontward from the front surface of the base and a hook section extending downward from an end of the support and then extending rearward. A hook protrusion is disposed on a lower surface of an extending rear portion of the hook section. The hook protrusion is engageable with the insertion opening of the cover. The hook protrusion is disengageable from the insertion opening by upward bending of the hook section caused by pressing of the hook protrusion by the tool inserted through the insertion opening.