A remote controller configured to transmit a control signal to an electronic device, comprising: a plurality of control keys; a first transmission unit (66, 94) provided with a function of transmitting a control signal; a second transmission unit (64, 95) provided with a function of transmitting a control signal; a plurality of selection keys (20a, 20b) configured to select a transmission destination of a control signal; an acknowledging unit configured to acknowledge user input from the plurality of control keys or from the plurality of selection keys; a plurality of indicators (61, 62, 63, 91, 92, 93) for the plurality of selection keys, respectively; an indicator control unit (72, 90) configured to control the mode of the indicators, and a storage unit configured to store previous device information indicating that the second electronic device was selected before the first selection key is operated, wherein the plurality of selection keys at least include: a first selection key configured to select a first electronic device to which the first transmission unit transmits a control signal; and a second selection key configured to select a second electronic device to which the second transmission unit transmits a control signal; and a third selection key configured to select a third electronic device to which the second transmission unit transmits a control signal, and wherein, when the acknowledging unit acknowledges the user input from among the plurality of control keys while an electronic device is selected, the indicator control unit changes the mode of an indicator for a selection key corresponding to the selected electronic device, and wherein, when the acknowledging unit acknowledges the user input from a control key other than a valid key enabled to control the first electronic device while the first selection key has been operated to select the first electronic device, the second transmission unit transmits a control signal to the electronic device identified by the previous device information. a plurality of control keys; a first transmission unit (66, 94) provided with a function of transmitting a control signal; a second transmission unit (64, 95) provided with a function of transmitting a control signal; a plurality of selection keys (20a, 20b) configured to select a transmission destination of a control signal; an acknowledging unit configured to acknowledge user input from the plurality of control keys or from the plurality of selection keys; a plurality of indicators (61, 62, 63, 91, 92, 93) for the plurality of selection keys, respectively; an indicator control unit (72, 90) configured to control the mode of the indicators, and a storage unit configured to store previous device information indicating that the second electronic device was selected before the first selection key is operated, wherein the plurality of selection keys at least include: a first selection key configured to select a first electronic device to which the first transmission unit transmits a control signal; and a second selection key configured to select a second electronic device to which the second transmission unit transmits a control signal; and a third selection key configured to select a third electronic device to which the second transmission unit transmits a control signal, and wherein, when the acknowledging unit acknowledges the user input from among the plurality of control keys while an electronic device is selected, the indicator control unit changes the mode of an indicator for a selection key corresponding to the selected electronic device, and wherein, when the acknowledging unit acknowledges the user input from a control key other than a valid key enabled to control the first electronic device while the first selection key has been operated to select the first electronic device, the second transmission unit transmits a control signal to the electronic device identified by the previous device information. a first selection key configured to select a first electronic device to which the first transmission unit transmits a control signal; and a second selection key configured to select a second electronic device to which the second transmission unit transmits a control signal; and a third selection key configured to select a third electronic device to which the second transmission unit transmits a control signal, and wherein, when the acknowledging unit acknowledges the user input from among the plurality of control keys while an electronic device is selected, the indicator control unit changes the mode of an indicator for a selection key corresponding to the selected electronic device, and wherein, when the acknowledging unit acknowledges the user input from a control key other than a valid key enabled to control the first electronic device while the first selection key has been operated to select the first electronic device, the second transmission unit transmits a control signal to the electronic device identified by the previous device information.