Is seems today, people are so busy chasing time to do their daily lifestyles such as man and women who got to work, students who go to the college and many more. Due to the era of woman who got to work, students who go to the college and many more. Due to the era of modernization, people sometimes neglect a little thing that can bring pain in the future. One of those things is the problem of letting the light in without switching off from day to night. Without realize, the electric bills are increasing from day to day. Yet it’s too late to be regret. So based on our experienced and observation among the citizen in our hometown, comes the idea to make something that can help to reduce the wastage of electrical energy and time at the same time. The idea is to make an automatic night light that will switched on during dusk till all the night and will switch off during the dawn till all the day depend on the intensity of light from the surrounding. This will help the busiest people to lowest their electrical bills due to wastage of neglecting to switch off the light as it will off by itself. By supply of housing plug, even disable people will be effortlessly turn on the light. There is no need from external disturbance to on nor off the light. This will ensure the safety of kids or child playing with the switches. Moreover, people on holidays doesn’t need to worry of their house electrical use as its function by itself like normal day without them. This if not much, a little it help to secure house from any thievery or any housebreaking. Science and technology always try to make human life easier. So the main purpose of this paper is based on abating the weakness of normal human being which is forgetful by constructing a sensor based device that can cooperate with human being in decreasing worries, stress and electrical wastage from undeniable weaknesses of forgetful. The hardware build on consist of component such as capacitors, transistors, resistors, optocoupler, triac, LDR, bridge diodes, Zener diodes, fuse and fuse holder, rheostat, T-block, Light source, and adapter.