Security system for Old Puzzle Solution Box

~sandhiya

Bharani from 9th grade has set an emergency alarm system in old puzzle solution box which gives a buzzer sound if someone opens the box.This prevents student from opening the box to see others answers.He used few materials like Battery,Buzzer,wires and clip.

The principle of this alarm is very simple.when someone opens the solution box ,the needle separating the clip is released , and the clip makes a closed circuit for the current flow which makes a sound.And also Bharani presented his project to his classmates and younger children in ISMART class. And students also tested his project.