1. because Current Sensor with sensitivity in measurement and the measurement is high in the area, preventing the low electricity meter. But it will be able to measure high voltage. 2. because we do not have a power factor meter. Make it impossible to compare the machine to measure electrical estimating whether a precision. 3. because of the need to work with a high-flow AC power causes a risk of harm that will occur. 4. due to the programming base on Data storage using Microsoft Visual Studio and 2012 must be connected to the Microsoft Access program which contains the used books, and reading a little more, it is necessary to learn from the Internet. Ask the elder From professors and students who have knowledge of this particular.5. XBee module that is used to send data, which is a wireless network, there are also sending less and to send a 120-metre is near.
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