Oxygen concentrator that allows to change the setting value of the flow rate of oxygen enriched gas through a remote control operation, comprising a main body (1) oxygen concentrator provided with means of adjusting the flow rate for separating oxygen in air and supplying the oxygen-enriched gas generated at a predetermined flow rate and a device (6) remote to control the main body oxygen concentrator from a distance, the main body (1) comprising oxygen concentrator a communication medium to transmit and receive information on the setting value of the flow rate to and from the remote control device and means (401) control to confirm the information and control the speed adjustment flow, the device (6) remote control button (601) comprising confirmation to confirm the setting value of v elocity gas flow oxygen enriched currently supplied by the main body of oxygen concentrator, a button (603, 604) setting change of the flow rate to change the setting value of the flow rate of enriched gas oxygen supplied by the main body of oxygen concentrator, a device (602) display for indicating the set value of the flow rate, and means (610) communication for transmitting and receiving information about the setting value of the flow rate to and from the main body of oxygen concentrator, wherein the device (6) remote control further comprises means (612) control that does not allow the operation button (603, 604) change adjusting the flow rate unless the device (6) remote control receive information about the setting value of the flow rate of oxygen enriched gas suppl Trado by the main body (1) of the current oxygen concentrator.Concentrador de oxígeno que permite cambiar el valor de ajuste de la velocidad de flujo del gas enriquecido en oxígeno mediante una operación por control remoto, que comprende un cuerpo (1) principal de concentrador de oxígeno provisto de un medio de ajuste de la velocidad de flujo para separar oxígeno en el aire y suministrar el gas enriquecido en oxígeno
