Abstract: : Consumption of electric power efficiently is the responsibility of every citizen of our country. Energy saved is energy generated. Resources to generate electric power either are limited or have side effects. There are many devices invented to use the electric power efficiently. But there are hardly any to be used in our everyday life. Hence a system is suggested to analyse the power usage in a Gathering Hall/Auditorium by deploying a visitor counter and automatic fan control system

Keywords: Raspberry Pi, IoT (Internet of Things), IR Sensors, Counter.