Abstract
In routine life the power utilization for electrical lights are more in the evenings when it is manually operated. The automatic lights on/off system will turn on the lights when the intensity of daylight is less and the lights will be turned off if the intensity of daylight is more. The intensity of daylight is sensed using the help of LDR sensor which send its sensed data to the power relay module which is an electrically operated switch. With improvement in technology, things are getting to be easier and simpler for everybody around the world. The Automatic light on/off system gives an answer for power utilization and saving which is accomplished by detecting the intensity of daylight utilizing the LDR sensors, integrated circuit (IC4093) and power relay module. Automation plays a vital job on the world's economy and in day-by-day experience of people. Key words: LDR, IC4093, Power relay module, Automation.
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