Get How Laser Security Alarm Works Background. Any tips if we are going than route? In this laser security alarm circuit we have used lm358 dual comparator ic for comparing voltages coming from ldr.
A1adventure how to make laser light security alarm system security systems security system project security system for home. The laser security alarm system is a diy project which can useful for protection, you can make it at your home by working explanation of 'laser light security alarm' circuit. In this circuit the ic lm358 ic is working as a comparator and ic lm555 is wired as a bistable multivibrator.
What is the time delay, for the alarm to start after the light beam get interrupted??
Alibaba.com offers 351 laser alarm security system products. The project basically works on the principle of interruption. No security system is complete without lasers. It works by utilizing infrared light to notice any difference in heat.