摘要 |
PROBLEM TO BE SOLVED: To provide a centralized controller for a showcase and the like which stores and saves temperature data or alarming data for a long time for the application of management as an occasion demands, and make a centralized control of a large number of showcases. SOLUTION: A centralized controller which controls collectively the operating states of a plurality of showcases in remote control mode, comprises a temperature control device 2 provided respectively in the plurality of showcases 1 or the like, a monitor control panel 4, which is connected to each temperature control device 2 with a serial transmission line 3 and a temperature data recording device 6 which is connectable to the monitor control panel 4 which the other serial transmission wire 5 as an occasion demands. The temperature data recording device 6 is provided with a memory means having a control circuit, which reads in and saves internal data of the monitor control panel 4 at regular intervals and a memory unit. |