Home Security System

A home security system is now more affordable and easier to install than it has ever been in the past. Wireless technology have removed the need for wiring the various sensors to the control panel. Alerts can be sent to mobile phones by the system and they can even allow homeowners to see and hear what is going on inside their home. Improved sensors have also reduced the number of false alarms that plagued older systems.

The main decision when choosing a home security system is whether to get a wireless system or one that is wired. A wireless system can be quickly installed and does not have any additional costs. The only cost of using a wireless system is the regular replacement of batteries but even this can be reduced by using rechargeable batteries. Wireless systems can be quickly removed and installed in a new house or apartment, and this is especially attractive to people who move frequently and want to take their system with them.

The control panel is the main component of every home security system. All the sensors and alarms are connected to the control panel and it is where the homeowner enables and disables the alarm. Many systems have a four digit security code that can be changed to whatever code is easiest to remember, such as the pin number for a bank account. Some systems also have a control panel that can be connected to a phone line, so that family members and neighbors can be alerted when the alarm goes off by sending them a voice or text message.

The two most common types of room sensor are passive infrared and ultrasonic. They are mounted high up on walls to detect any intruders within an arc in front of them. The older ultrasonic detectors measured motion but are not used much today. The most common type used today are passive infrared that measure temperature change. When a intruder moves in front of the detector, a slight change in temperature occurs and the detector signals the control panel to set off the alarm. Wireless room sensors are not wired back to the control panel and need to have their batteries changed regularly.

Door and window sensors have two parts that trigger the alarm when they are moved apart. One part contains a magnet that is strong enough to influence a switch in the other part. If a door or window is opened, the magnet moves away from the switch on the frame and the alarm triggers. Another sensor that is often used with these is the pressure pad. It is hidden under the carpet next to a door or window and triggers the alarm if someone steps on it. These sensors often have switches so they can be turned off to allow access to part of the home, while the other parts remain monitored.

Detecting an intrusion is only half of the solution. A home security system is useless unless it can scare away the intruders or alert others to their presence. By connecting sirens and flashing lights to the control panel, people in the immediate vicinity can be alerted. Modern systems can also be programmed to call multiple phone numbers and send text and voice messages to them. Advanced systems even have the capability to send audio, pictures and video from inside the house to a cell phone or web site.

A basic wireless kit costs less than two hundred dollars, and comes with a control panel and at least one sensor. Extra sensors can be purchases for less than twenty dollars. Sirens and flashing lights can be expensive but they are not essential for a home security system to function. Unfortunately, many people tend to ignore alarms these days. If it can be established that there are intruders in the house, a call to the police may be more effective.

This Home Security System Review is Written/Updated on Mar 2nd, 2009 and filed under Home Automation, Home Improvement. Both comments and pings are currently closed.

1 Response for “Home Security System”

  1. Elk M1 says:

    Nice summary of home security, I like the idea of a sensor buried under the carpet like you mention – will have to look into that one!

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