| 摘要 |
PROBLEM TO BE SOLVED: To continuously indicate the temperature without any trouble even when a temperature sensor of a thermometer is failed. SOLUTION: A thermometer 1 is provided with a temperature indication part 5, a microcomputer 11, a temperature sensor 4, and a transmission/reception circuit 12 to transmit/receive the data to/from a controller 2 of a showcase, and provided on the showcase, and indicates the temperature in a storage chamber of the showcase detected by the temperature sensor 4 on the temperature indication part 5. When the microcomputer 11 detects any abnormality of the temperature sensor 4, the temperature data obtained from the controller 2 are indicated in the temperature indication part. |
