There was an accident that happened in China where a baby died in a car. The baby was left alone in the car for a long time during a hot summer day. The parents forgot that they left the baby in the car. After several hours, the baby suffocated to death from the high temperature in the car. To prevent such accidents, this project will focus on building the 'Child Car Seat Alert System'. The main object of this project is to remind the driver of the vehicle (or the parents) that the vehicle is stopped and the child is inside the vehicle.