The most basic equipment of an alarm system consists of one or more intrusion detection sensors and an intrusion alert device (keypad). The sensors can be placed on the perimeter of the protected area, within the protected area, or both.

Alarm systems are installed to scare an intruder away from your premises or home and alert you to a threatening situation such as a fire or the presence of carbon monoxide. The connected parts of an alarm system work together to detect, identify and prevent danger.

Alarm sensors are devices that detect events that do not match the settings selected by the customer and signal a violation by sending signals to the control panel for processing. Alarm sensors, mechanical or electronic, must be strategically placed so that they can monitor conditions that require security alerts.

Infrared sensors use infrared light to detect movement. In a security system, this motion triggers an alarm, turns on the lights or sends an alert. There are, however, two different types of infrared sensors commonly used in security devices - active and passive infrared sensors.

• Flying or crawling insects they usually make webs on the sensors.
• Pets.
• Curtains or plants that are moved by air conditioning air.
• Low alarm battery.
• Objects moving near motion sensors.

The short answer is, yes. Today you don't need a phone line to monitor your home alarm system. Many alarm system companies have many monitoring options, including phone line, broadband and mobile monitoring.

Many security system companies recommend an internet connection so that you can remotely control the alarm from your mobile phone, however in a more basic alarm system it is not a requirement.

Many times an old alarm system is not compatible with the newer monitoring technologies available. This is especially true if you have had your alarm system for more than four or five years. If you have a generally newer alarm system, it is likely that you can find an alarm system company to take over using your existing equipment. Ultimately, it may be worth installing a new alarm system if the price is within your budget.

When it comes to wireless alarm systems versus wired alarm systems, it's not necessarily which one is "better". Both a wireless and a wired alarm system can protect your home and work similarly.

You may have already answered your own question. The internet is an excellent source for alarm system reviews and information on the best of the market based on demand. Various brands and alarm system information from equipment to installation and pricing can be found on our site.