You have probably heard so much about driveway alarms because of the increasing demands for home security systems these days. Read on to understand how this alarm system works and how it protects your family and home.

A driveway alarm is designed to monitor gateway, entrance locations or perimeter around your property, usually locations which are out of sight while also providing additional security for the night. The alarm informs you through different ways if a visitors is present, letting you to prepare in advance instead of being taken by surprise.

How the Alarm System for Driveways Work

Most driveway alarms use wireless technology which makes them quite easy and quick to fit. They are composed of at least one battery-powered detector that would be positioned near locations that are too blind and vulnerable.

When an intruder or visitor triggers a detector, a wireless signal is transmitted back to one of the receivers that will inform you about the presence of the person. Normally, the receiver would be found inside the house or office; however, also available are portable pagers, auto dialers and external sirens deployed at various times of the day.

Kinds of Detectors

There are various types of detectors which can be used. The following are the most common.

  • Passive Infra-Red (PIR).  Typically, this is powered by a standard battery. It is easy and quick to install. This driveway motion sensor monitors the immediate area within its detection range searching for a sudden increase of infra red radiation that would be given off by the majority of animals, vehicles and people. They don’t need to be lined up with other objects. There are no other objects or reflectors which must be used.

 Ideally, the detector needs to be hidden away from the location’s edge. Normally, the detection range is from 12 meters to 20 meters which make it easy to hide it away. Also, the beam’s width is quite essential since in most applications because you will wish to have a beam that you could mount in such a way that small ground animals are not detected.

Installing a PIR includes fitting it at a height of 1 meter to 1.5 meters on a wooden fence or wooden post which is two to six meters away from the monitored location’s edge, inside a wooden bird box, behind a gate post, inside a plastic paint tub or behind a face panel.

  • Active perimeter beam. This kind of detector is supplied in pairs and installed so every beam is actively searching for and monitoring each other. When the view is blocked, a wireless signal will be sent back to the selected receiver. Normally, this detector is believed to be more accurate than a PIR since it’s likely to offer false alarms.

Typical installations of the beams include fitting them at a height of 1 to 1.5 meters on a couple of wooden posts or on two posts of brick pillars that cover a yard or building.

Author Bio – Danniel Baker is a famous computer mentor and technology geek. He owns a number of technology blogs followed by thousands of people from around the world.