Hello friendz will back with a new video in which i make a laser alarm system which generally be seen in high tech secqure place as some one cross that part the alarm start to make noise
In this project i use one laser Light, one circut plate, Buzzer, 9v battery, Resistance 150k, LDR, A small wire
Hope you like it ☺
And do not forget to SUBSCRIBE AND LIKE
PROJECT COST $4