| 摘要 |
This power meter (100) is provided with a first control device (108), which carries out signal transmission and reception with a display unit (104) and an external communication unit (105), as well as a security sensor (109). A second control device (207) of the security sensor (109) carries out sensor log generation processing for generating a sensor log showing an output value level history for a plurality of sensors (201)-(205). When a period during which communication with the first control device (108) is impossible occurs, the second control device (207) carries out action estimation log generation processing for generating an action estimation log showing a type of fraudulent activity estimated from the sensor log generated in said period of communication impossibility. |
