An outdoor device for an air conditioner, the outdoor device comprising: a case including a front panel that defines a front surface of the case and including a service panel, side panels that define both sides of the case, and a rear panel that defines a rear surface of the case; an outdoor heat exchanger provided inside of the case, wherein the outdoor heat exchanger has four heat exchange surfaces at positions corresponding to a plurality of suction holes which is defined, respectively, in the front panel, the side panels, and the rear panel; a control box provided at a rear side of the service panel, wherein the control box includes an electronic case that accommodates an electronic component; and a mover (80, 90) provided at one side of the case to guide movement of the control box, wherein the control box is movable in a direction in which a space defined between the electronic case and the outdoor heat exchanger is increased in volume by the mover (80, 90), wherein the mover (80, 90) includes: a first bracket fixed to the case; and a second bracket fixed to the control box and selectively seated at a plurality of positions on the first bracket, wherein the second bracket adjusts a position of the control box, wherein the first bracket is coupled to one of the side panels to extend in one direction, characterized in that a first opening is defined in the first bracket, and wherein a plurality of seat grooves is defined at a bottom of the first opening, wherein the plurality of seat grooves includes a first seat groove, a second seat groove, and a third seat groove, which are spaced apart from each other, wherein the first seat groove is defined at end of the first opening corresponding one side surface of the case, and wherein the second seat groove is defined between the first seat groove and the third seat groove. a case including a front panel that defines a front surface of the case and including a service panel, side panels that define both sides of the case, and a rear panel that defines a rear surface of the case; an outdoor heat exchanger provided inside of the case, wherein the outdoor heat exchanger has four heat exchange surfaces at positions corresponding to a plurality of suction holes which is defined, respectively, in the front panel, the side panels, and the rear panel; a control box provided at a rear side of the service panel, wherein the control box includes an electronic case that accommodates an electronic component; and a mover (80, 90) provided at one side of the case to guide movement of the control box, wherein the control box is movable in a direction in which a space defined between the electronic case and the outdoor heat exchanger is increased in volume by the mover (80, 90), wherein the mover (80, 90) includes: a first bracket fixed to the case; and a second bracket fixed to the control box and selectively seated at a plurality of positions on the first bracket, wherein the second bracket adjusts a position of the control box, wherein the first bracket is coupled to one of the side panels to extend in one direction, characterized in that a first opening is defined in the first bracket, and wherein a plurality of seat grooves is defined at a bottom of the first opening, wherein the plurality of seat grooves includes a first seat groove, a second seat groove, and a third seat groove, which are spaced apart from each other, wherein the first seat groove is defined at end of the first opening corresponding one side surface of the case, and wherein the second seat groove is defined between the first seat groove and the third seat groove. a first bracket fixed to the case; and a second bracket fixed to the control box and selectively seated at a plurality of positions on the first bracket, wherein the second bracket adjusts a position of the control box, wherein the first bracket is coupled to one of the side panels to extend in one direction, characterized in that a first opening is defined in the first bracket, and wherein a plurality of seat grooves is defined at a bottom of the first opening, wherein the plurality of seat grooves includes a first seat groove, a second seat groove, and a third seat groove, which are spaced apart from each other, wherein the first seat groove is defined at end of the first opening corresponding one side surface of the case, and wherein the second seat groove is defined between the first seat groove and the third seat groove.