Definition of alarm

According to the context in which use it, the word alarm can refer to various issues. One of the most recurrent uses presenting the term is to refer to that signal that warns of the existence of an immediate danger. Officers who care sector gave the voice of alarm.
On the other hand, to the device that warns about danger or warns about some peculiarity is also called alarm. Car alarm rang in the middle of the night and really did us scare; but was the wake-up alarm had continued sleeping.
Also, when it dominates us a sense of apprehension, we suffer from a scare or something startles us is often used the term alarm to refer to them. After the bomb in the building threats spread alarm among those present.
An alarm system is a very used in security and even though it does not avoid completely any abnormal situation from happening, it is very useful to prevent it, since it is able to warn about it, for example, to notify when an intruder enters our property, sound is detected the presence of fire, some water tank overflow , the presence of some pollutants, among other alternatives.
Its operation consists of sending a warning signal to the alarm central unit, then this will issue the relevant communication with the place and not found response will send personnel to the site, for example, a squad of firefighters in case of a fire alarm.
Meanwhile, there are different types of alarm... Alarm car llamadora are those, usually hand-held transmitters, which are equipped with a pushbutton, which, in case of operation send a direct signal to the alarm Center. This allows the signal can be emitted from the location of the home or office which is, since the transmitter is specially designed to be placed on the neck, gripping on the clothes or the wrist of individuals. Immediately that the push button is activated and becomes the signal of alarm, the unit in question will communicate with a relative or interested party stipulated to know if it is accidentally triggered either because there is a real danger. There is no response will be sent a professional which verifies the situation in place.
On the other hand, a fire alarm is a device specially prepared to warn residents of a building on the presence of fire and thus facilitate the rapid evacuation of the same. It is activated when sensors perceive any sudden change in temperature either when directly detect smoke. The device can be electronic or electromechanical, Horn, of the campaign.