A wall mount assembly , comprising: a case body , including a front surface , a rear surface , and an outer peripheral surface connected to the front surface and the rear surface ; wherein a slit is formed on the rear surface and extends in an installation direction (Y); a first fixation hole is formed on the outer peripheral surface and communicates with the slit ; a latch member , disposed on the rear surface ; a fixing plate , including a wall mount surface and an installation surface ; wherein the fixing plate further includes: a latch hole , including an opening portion and a sliding slot portion ; wherein the opening portion is adapted to allow the latch member to pass through from the installation surface , so as to allow the latch member to slide into the sliding slot portion and to engage with the wall mount surface ; and a lug , perpendicularly extending from the installation surface and adapted to be inserted into the slit ; wherein an extension direction of the sliding slot portion is in parallel to the lug , and the lug further includes a second fixation hole ; wherein when the lug is inserted into the slit and the latch member is located at a closed end of the sliding slot portion , a projection of the first fixation hole on the lug overlaps the second fixation hole ; and the wall mount assembly further comprises a fixation member , adapted to be inserted into the first fixation hole and the second fixation hole from the outer peripheral surface . a case body , including a front surface , a rear surface , and an outer peripheral surface connected to the front surface and the rear surface ; wherein a slit is formed on the rear surface and extends in an installation direction (Y); a first fixation hole is formed on the outer peripheral surface and communicates with the slit ; a latch member , disposed on the rear surface ; a fixing plate , including a wall mount surface and an installation surface ; wherein the fixing plate further includes: a latch hole , including an opening portion and a sliding slot portion ; wherein the opening portion is adapted to allow the latch member to pass through from the installation surface , so as to allow the latch member to slide into the sliding slot portion and to engage with the wall mount surface ; and a lug , perpendicularly extending from the installation surface and adapted to be inserted into the slit ; wherein an extension direction of the sliding slot portion is in parallel to the lug , and the lug further includes a second fixation hole ; wherein when the lug is inserted into the slit and the latch member is located at a closed end of the sliding slot portion , a projection of the first fixation hole on the lug overlaps the second fixation hole ; and a latch hole , including an opening portion and a sliding slot portion ; wherein the opening portion is adapted to allow the latch member to pass through from the installation surface , so as to allow the latch member to slide into the sliding slot portion and to engage with the wall mount surface ; and a lug , perpendicularly extending from the installation surface and adapted to be inserted into the slit ; wherein an extension direction of the sliding slot portion is in parallel to the lug , and the lug further includes a second fixation hole ; wherein when the lug is inserted into the slit and the latch member is located at a closed end of the sliding slot portion , a projection of the first fixation hole on the lug overlaps the second fixation hole ; and the wall mount assembly further comprises a fixation member , adapted to be inserted into the first fixation hole and the second fixation hole from the outer peripheral surface . <EOS>