bharatbhasha.net


Free Articles  >>  Home Improvement >>  Page 596  >> 

Burglar Alarm Protect Your Home



Burglar alarms have become things of common place in almost all super stores and business set ups. Private homes are not left out too far behind. Advancements in technologies and competition in the market have brought down the rates to around $10 for a basic alarm system.

How Does Burglar Alarms Work Wired alarms are almost extinct. Wireless burglar alarms operate by either of the two means, today.

1.Connected by radio frequency

2.Connected by infra red light rays

Wired systems required power to operate continuously unlike the wireless alarms which run on battery power. There is the third type, which combines the features of the earlier two and is known as hybrid alarm.

Burglar alarms operate on simple principles. When their ‘connection’ or circuit cuts, they get triggered. When intruders pass between two sensors or a door opens it is detected by their cut circuit.

Normally there are 2 types of circuits; open circuit systems and closed circuit systems. Let us not get into jargons and cliché words; closed circuit operates when the door is closed as electricity begins to flow. But when interrupted by opening doors, circuit also opens and the alarm goes off. And it is the exact reverse of this in open circuit alarms. The siren is triggered when doors are closed.

Closed circuit alarms are first choice for front doors for the fear of wiring being cut by burglars.

How does a sensor work, after all? In a wired system, a magnet pulls the spring loaded switch to close circuit when door is closed. When the door opens, spring retracts causing the circuit to break and triggering the alarm. The principle is same for wireless infrared system too. In place of magnets and wires, there are infrared sensors and emitters. If sensors don’t sense infrared light for reasons like opened door or other obstructions, the circuit is broken.

Burglar Alarms are also useful in protecting cars. FM radio based car alarms are getting popular because of their simplicity. They have a two part system: a transmitter, fitted to the car and a receiver which can be out side the car (home or office). The receiver makes noise when burglars move the car a few meters out of your porch. If the wireless alarm (transmitter) is disconnected from battery, remote alarm still remains activated because the receiver still continues to make noise. So this type of burglar alarm is highly reliable.

While installing, ensure you follow specified codes by insurance companies or certify it by third parties like Underwriters’ Laboratory etc. After all, you need someone even after burglar alarms are breached.
About Author Alan Ross :

Alan Ross is a regular article contributor on many topics. Be sure to visit his other websites http://www.firealarm-foryou.info, http://www.burglar-alarm-foryou.info and http://www.security-alarms-foryou.info


Article Source: http://www.bharatbhasha.net
Article Url: http://www.bharatbhasha.net/home_improvement.php/44970


Article Added on Saturday, July 8, 2006
Other Articles by Alan Ross

•Children And Their Puppets
Definition tells us a puppet is a small figure of a person operated from above with strings by a puppeteer. Ironically, a person who is controlled by others and is used to perform unpleasant or dishonest tasks for someone is also referred to as a puppet. Puppets: The Finest Dolls Puppets are finest because they can be played with so little effort unlike the battery operated dolls. Although playing puppets doesn’t let you watch them, playing them in itself is a great fun. Puppets are used to...

•Helmets Why Do You Need It When Riding
Helmet is a French derivative of the word ‘helm’ from 15th century. Although helmets are available in countless designs for different utilities, they all serve just one purpose, which is head protection. The earlier helmets used to be manufactured in leather till the 10th century AD when metals with inner cloth lining for cushioning and comfort of wearing on the head became the norm. Helmet wearing is mandatory in northern America, barring a few states, for all bikers, whereas Sikhs are...

•How Choose The Right Type Of Lawn Mower
Do you like to have a beautiful lawn in your yard? Clean, green and well mowed lawn is not just everybody’s dream but also is pretty much pleasing. You can engage a lawn mowing service for a fee but how about doing it yourself over the weekend? You need to know what type of lawn mower suffices your need and how much you should spend on it etc before you bought one for your home. Choosing the Right Type of Lawn Mower Before you chose a lawn mower, decide whether you want to buy electric or...

•Types Of Heater
Conventional heaters broadly fall into three categories, which are radiant heaters, convective heaters and conductive heaters. Technically speaking these are the only three ways for heat to transfer of move from heat generator to their target area. Most of the household heaters are the third type, that is, convective type of heaters. A Little More Technical Information To make things simple, Radiant heaters transfer heat even without a medium, that is, through vacuum or air. This is called...

•Insurance Promise Of Reimbursement
The word insurance, on a broader sense means ‘Promise of reimbursement in the case of loss; paid to people or companies so concerned about hazards that they have made prepayments in the form of premium to an insurance company’. In principles, insurance dwells on assumptions such as 1.The losses and consequences are uncertain 2.Rates of losses are fairly quantifiable and predictable 3.Losses are not calamitous 4.Losses are substantial This unambiguously infers that speculative risks such...

•A Look At Carpets
Carpets are one of the most romanticized consumer items which have a long history dating back to 4th millennium BC. The romance still lingers on in the Arabian world which is evident from the value they place on owning expensive carpets. A gold laced pure wool carpet was among the wedding gifts received by the reigning Sheikh of Saudi Arabia in 1978. Carpets and rugs are not the same as is confusedly interchanged by some people. While carpets are generally used as floor coverings rugs are...

•Refinancing Points To Remember
You would consider refinancing only when going gets tough and making ends meet becomes difficult with credits looming over large on you; and you are in a debt trap with creditors calling on you day-in and day-out. Refinancing is your option if it helps reduce your net monthly outgo. Weigh the pros and cons of the option and keeping in mind, the hard facts of life. Some Key Points to Ponder 1. Reducing your monthly installments. Multiple credits and mortgages bog you down with accumulated...

Publishers / Webmasters
Tell A Friend
Leave A Comment!
Download this article in PDF
Report Article!
Search through all the articles:


201 Users Online !
Related Articles:
Latest Articles:
 
home improvement >> Top 50 Articles on Home Improvement
Category - >
• Advertising • Advice • Affiliate Programs • Automobiles
• Be Your Own Mentor • Careers • Communication • Consumers
• CopyWriting • Crime • Domain Names • DoT com Entrepreneur Corner
• Ebooks • Ecommerce • Education • Email
• Entertainment • Environment • Family • Finance And Business
• Food & Drink • Gardening • Health & Fitness • Hobbies
• Home Business • Home Improvement • Humour • House Holds
• Internet And Computers • Kiddos and Teens • Legal Matters • Mail Order
• Management • Marketing • Marriage • MetaPhysical
• Motivational • MultiMedia • Multi Level Marketing • NewsLetters
• Pets • Psychology • Religion • Parenting
• Politics • Sales • Science • Search Engine Optimization
• Site Promotion • Sports • Technology • Travel
• Web Development • Web Hosting • WeightLoss • Women's Corner
• Writing • Miscellaneous Articles • Real Estate • Arts And Crafts
• Aging


Disclaimer: The information presented and opinions expressed in the articles are those of the authors
and do not necessarily represent the views of bharatbhasha.net and/or its owners.


Copyright © AwareINDIA. All rights reserved || Privacy Policy || Terms Of Use || Author Guidelines || Free Articles
FAQs Link To Us || Submit An Article || Free Downloads|| Contact Us || Site Map  || Advertise with Us ||
Click here for Special webhosting packages for visitors of this website only!
Vastu Shastra

Linux Hosting Provided By AwareIndia