To provide a centralized control device of show cases or the like, which can quickly perform emergency measures or the like to abnormalities in a store side, in the case of controlling a plurality of show cases or the like together.

This centralized control device controls the operating conditions of a plurality of show cases SC or the like together, and it comprises a main control device 3 that is set at a store to collect data from each show case SC or the like, and a remote control device 2 that is set in the maintenance management side. The main control device 3 and the remote control device 2 transmit and receive data through a communication means. The main control device 3 is provided with a liquid crystal display part. When the main control device 3 receives the data on the alarm from the show cases or the like, it displays the relevant data on the contact address of the maintenance management or the like, the method of measures, etc., in addition to the contents of the said alarm on a liquid crystal display device.