Smart Security Systems | Top Quality Equipment | Easy Installation | Worry-Free Service | Get A Free Estimate

How do motion sensing lights and burglar alarms work?

Author: External Author | Feb 24, 2021 | Categories: Burglar Alarm System , Interactive Security System

It is common for stores to have a beam of light crossing the room near the door, and a photosensor on the other side of the room. When a customer breaks the beam, the photosensor detects the change in the amount of light and rings a bell.

Read More

Original Article Source Credits: How Stuff Works , https://home.howstuffworks.com/

Article Written By: NA

Original Article Posted on: NA

Link to Original Article: https://home.howstuffworks.com/home-improvement/household-safety/question238.htm