A cleaner comprising: a power input unit for receiving and outputting power; a controller for selectively receiving power from the power input unit ; a power consumption unit controlled by the controller ; a manipulation unit for inputting a command for adjusting an operation state of the power consumption unit ; and a power supply adjuster connected to the power input unit , the controller and the manipulation unit , wherein the power supply adjuster : supplies power received from the power input unit to the controller and transmits a signal for the intensity of the suction force to the controller , in a state in which an intensity of suction force is selected by the manipulation unit ; interrupts supply of power received from the power input unit to the controller in a state in which an OFF command is input by the manipulation unit ; is characterized by : a power switch connected to the power input unit and the manipulation unit ; a first resistor connected to a first terminal and a control terminal of the power switch ; and a second resistor connected to the control terminal of the power switch and one end of the manipulation unit . a power input unit for receiving and outputting power; a controller for selectively receiving power from the power input unit ; a power consumption unit controlled by the controller ; a manipulation unit for inputting a command for adjusting an operation state of the power consumption unit ; and a power supply adjuster connected to the power input unit , the controller and the manipulation unit , wherein the power supply adjuster : supplies power received from the power input unit to the controller and transmits a signal for the intensity of the suction force to the controller , in a state in which an intensity of suction force is selected by the manipulation unit ; interrupts supply of power received from the power input unit to the controller in a state in which an OFF command is input by the manipulation unit ; is characterized by : a power switch connected to the power input unit and the manipulation unit ; a first resistor connected to a first terminal and a control terminal of the power switch ; and a second resistor connected to the control terminal of the power switch and one end of the manipulation unit . supplies power received from the power input unit to the controller and transmits a signal for the intensity of the suction force to the controller , in a state in which an intensity of suction force is selected by the manipulation unit ; interrupts supply of power received from the power input unit to the controller in a state in which an OFF command is input by the manipulation unit ; is characterized by : a power switch connected to the power input unit and the manipulation unit ; a first resistor connected to a first terminal and a control terminal of the power switch ; and a second resistor connected to the control terminal of the power switch and one end of the manipulation unit . a power switch connected to the power input unit and the manipulation unit ; a first resistor connected to a first terminal and a control terminal of the power switch ; and a second resistor connected to the control terminal of the power switch and one end of the manipulation unit . <EOS>