| 摘要 |
PROBLEM TO BE SOLVED: To provide a centralized control system which can improve mainte nance property, etc., and can materialize the cost reduction. SOLUTION: This is a centralized control system which controls the operation state of plural units of show cases, etc., and this is equipped with a control means on shop side which collects data from each show case or the like, being installed in a shop or the like, and a control means on center side which performs the transfer of data through the control means on shop side and a communication circuit, being installed on center side. This is constituted such that this can indicate the transmission and reception state of data on the temperature indicator 91 of a show case, or the like, using the indication means 92 and 93 of the temperature indicator 91. |
