Abstract: A refrigerator includes a casing including storage compartments, doors attached to the casing to expose or cover the storage compartments, hinges connecting the doors to the casing and supporting the doors so that the doors are openable and closable, electrically non-conductive hinge covers detachably attached to the casing and covering the hinges, and a wireless adapter disposed on the hinge cover and including an antenna unit configured to transmit and receive radio waves.

Abstract: A power management system includes a plurality of electric devices including a refrigerator, and a centralized controller configured to control the plurality of electric devices. The centralized controller includes difficulty determination means configured to determine power supply difficulty as a degree of difficulty in supplying power to the plurality of electric devices. Meanwhile, the refrigerator includes: a control setting table in which a plurality of power reduction controls that reduce use of power are stored to be associated with the power supply difficulty; reduction control setting means configured to set the power reduction control to be executed, by using the control setting table and the power supply difficulty determined by the difficulty determination means; and a device controller configured to perform the power reduction control set by the reduction control setting means.

Abstract: A refrigerator includes a casing including storage compartments, doors attached to the casing to expose or cover the storage compartments, hinges connecting the doors to the casing and supporting the doors so that the doors are openable and closeable, non-conductive hinge covers detachably attached to the casing and covering the hinges, and a wireless adapter disposed on the hinge cover and including an antenna unit configured to transmit and receive radio waves.

Abstract: A power management system includes a plurality of electric devices including a refrigerator, and a centralized controller configured to control the plurality of electric devices. The centralized controller includes difficulty determination means configured to determine power supply difficulty as a degree of difficulty in supplying power to the plurality of electric devices. Meanwhile, the refrigerator includes: a control setting table in which a plurality of power reduction controls that reduce use of power are stored to be associated with the power supply difficulty; reduction control setting means configured to set the power reduction control to be executed, by using the control setting table and the power supply difficulty determined by the difficulty determination means; and a device controller configured to perform the power reduction control set by the reduction control setting means.