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Smart Home is one of the popular technological advances and developed by researchers or academics because of its high potential to be implemented in various fields. Smart Home is an Internet of Things based technology, which means that by connecting to the internet everyone can connect whenever and wherever they are. With the presence of smart home, it can simplify human problems and limitations. This paper describes the design and prototype of smart Home based on Internet of Things Applications on Android. There is an android application that functions to control and monitor the smart home. By using NodeMCU, is used as a line communication device between users and smartphones. The use of databases in Firebase makes the data on the smart home always real-time active because it is connected to Google servers. We also develop an android application; thus smart home can be controlled by its owner. Keywords: Smart Home, Internet of Thing, Android, Firebase.

In electrical engineering, there are several power terms; active power, reactive power, instantaneous active power, instantaneous active power, instantaneous power, apparent power and complex power. Even though are used in daily activity, electrical practitioners are facing difficulty to explain those terms practically. This paper tries to solve those difficulty by interpret those term in practical way. Firstly, each power term are defined theoretically. Then those terms are presented mathematically. Next, power in single phase sinusoidal electric network is analyzed. Theoretical definition result is connected with power analysis result. Computer simulations are held to strengthen interpretation result. Considering the width of discussion area, this paper only covers most general application, that is single phase sinusoidal network.