DIGITAL METER INCLUDING WIRELESS DEVICE

摘要

PURPOSE: A digital meter including a wireless device is provided to measure a voltage everywhere by installing the wireless device at the digital meter. CONSTITUTION: A digital meter(20) includes the first electric potential measurement portion(200), the second electric potential measurement portion(220), and a main body(240). The first electric potential measurement portion transmits the electric potential of a reference electric potential line. The second electric potential measurement portion transmits the electric potential of a power source line. The main body measures a voltage by detecting the electric potential difference and indicates the measured voltage. The first electric potential measurement portion includes the first wireless transmission portion in order to transmit the electric potential to the main body. The second electric potential measurement portion includes the second wireless transmission portion in order to transmit the electric potential to the main body.