COMMUNICATION TERMINAL DEVICE AND WATT-HOUR METER INCORPORATING THE SAME

PROBLEM TO BE SOLVED: To control power consumption to a prescribed value or lower even when a communication module whose power consumption is uncertain is used. SOLUTION: A communication terminal device for fetching data of the watt-hour meter and transmitting them to other devices via a communication network is provided with: a communication part for executing interface processing with the communication network; an operation part for executing transmission processing with other devices; a first power supply part for fetching power from the electricity meter and supplying it to the operation part; and a second power supply part for charging an electricity storage means with power supplied by the watt-hour meter or the first power supply part by a constant current circuit and supplying the charge current for the communication part via a constant voltage circuit. COPYRIGHT: (C)2008,JPO&INPIT