There is a study to realize networking, consumption electricity monitor, and control, by a power supply tap device for the existing household appliance. It called a smart tap, and consumption electricity monitor and/or control are possible without buying a new household appliance. However, most smart taps realized only monitor of the consumption electricity and an automatic power supply OFF function in the nonuse. In this paper, we have developed the smart tap, called the Intelligent Power Tap, that can remote monitor and control electricity consumption using network and control technology. Power supply ON/OFF at the time of going out and high energy management can be realized for an existing household appliance by this.