It is understood by alarm the sign or notice that warns about the proximity of a danger. The alarm notice informs the community in general or to a specific entity (such as firefighters or police) that must follow certain emergency instructions given that a threat has been presented.
For instance: “I think there is a fire near here: I hear an alarm”, “The alarm started to sound and, five minutes later, the police were already at the victim’s home., “The townspeople were in an uproar when the alarm that warns of the imminence of a tsunami sang its first notes”.
The alarms that constitute the organizations that must respond to a emergency, are usually part of a system which includes various states. The first of them is him pre-alert, which alerts those responsible for the agency about an incident that may take place. The second state is the alert, which requires taking the necessary measures and precautions. Finally comes the alarm, which is the call to action.
In homes and buildings, whether residential, commercial, or government, the alarm system it is a passive security element (it cannot avoid a risky situation, but warns of it and gives notice to the security forces). Some systems can automatically warn of a hazard (by detecting an intrusion at night via motion sensors), while others require user action (when a robbery is initiated and an employee triggers the alarm to call to policeman).
Modern alarm systems generally have a number panel that must be used by the owner of the protected property to create one or more security keys, which must be entered in various well-defined situations, such as when entering the property and before leaving it. Motion detection, which allows the automatic warning of improper activity in a building, is not always the appropriate option, given its degree of imprecision.
While the sensors movement They can be calibrated to ignore a certain range of changes in the environment, such as the shadows of the furniture and the plants projected by the lights that come from the street or the flight of an insect, it is impossible to prevent certain incidents that require actions little regular by the owners themselves. In such cases, sometimes emergencies, the alarm becomes a nuisance, an obstacle to solving the problem.
On the other hand, the term alarm also refers to the application or the device that is programmed to emit a sound at a certain time, in order not to forget an engagement. In the old days, before the era of smartphones, people used to have on their bedside table a clock with an alarm system included, initially made with gears and later, in its digital version.
The alarm used to be used especially in the mornings, to wake up early and be able to fulfill the typical obligations of a person: study or work. However, with the advent of the digital age, alarm systems began to migrate from old-fashioned alarm clocks to be part of all kinds of electronic gadgets, from video game consoles to mobile phones, and in the same way its utility.
Nowadays it is common to program various alarms, also called notices, on the phones, to remind us of all kinds of commitments. In addition, it is possible to organize them in such a way that some sound every day, others only one or certain days determined by us, as well as indicate them to run indefinitely or only once and then be eliminated.