A device control system (10,10A,10B), comprising: a plurality of plug-in connectors, provided for wiring, each including an attachment plug and a plug receptacle; and a reception device, wherein each of the plurality of plug-in connectors further includes: a sound collector configured to collect an ambient sound to generate a sound signal in form of an electric signal; a determination processor configured to determine a presence or absence of an event involving generation of a specific sound based on the sound signal; and a transmitter configured to transmit a notification signal based on a determination result by the determination processor; characterized in that the plurality of the plug-in connectors include at least one master and at least one slave which is a remaining plug-in connector of the plurality of the plug-in connectors except for the master, the transmitter of the at least one slave is configured to transmit a determination result by a corresponding determination processor to the at least one master as the notification signal, the at least one master further includes a selector configured to select, as a selection determination result, one determination result of a determination result by the determination processor of the at least one master and the determination result by the determination processor of the at least one slave (1B,1C,1D), and the transmitter of the at least one master is configured to transmit the selection determination result as the notification signal to the reception device, the reception device is configured to receive the notification signal from the transmitter of the at least one master, and control a device based on the determination result by the determination processor. a plurality of plug-in connectors, provided for wiring, each including an attachment plug and a plug receptacle; and a reception device, wherein each of the plurality of plug-in connectors further includes: a sound collector configured to collect an ambient sound to generate a sound signal in form of an electric signal; a determination processor configured to determine a presence or absence of an event involving generation of a specific sound based on the sound signal; and a transmitter configured to transmit a notification signal based on a determination result by the determination processor; a sound collector configured to collect an ambient sound to generate a sound signal in form of an electric signal; a determination processor configured to determine a presence or absence of an event involving generation of a specific sound based on the sound signal; and a transmitter configured to transmit a notification signal based on a determination result by the determination processor; characterized in that the plurality of the plug-in connectors include at least one master and at least one slave which is a remaining plug-in connector of the plurality of the plug-in connectors except for the master, the transmitter of the at least one slave is configured to transmit a determination result by a corresponding determination processor to the at least one master as the notification signal, the at least one master further includes a selector configured to select, as a selection determination result, one determination result of a determination result by the determination processor of the at least one master and the determination result by the determination processor of the at least one slave (1B,1C,1D), and the transmitter of the at least one master is configured to transmit the selection determination result as the notification signal to the reception device, the reception device is configured to receive the notification signal from the transmitter of the at least one master, and control a device based on the determination result by the determination processor.