Editing Alarm device (section)

== Devices ==

[[File:Verisure Moonshot 2022 alarm system - 2023-01-03.jpg|thumb|A 2022 alarm system panel with devices linked to central]]

There are many kinds of alarm devices. The most common types include: 
* an alarm clock that sounds an alarm at a pre-set time, often used to wake a person up or remind them of an event.
* a fire alarm which is used to give occupants of a building early warning of a potential fire and give them time to evacuate.
* warning devices on a vehicle that sound when it is moving in an unexpected direction, such as reversing,
* a siren, often accompanied by flashing coloured lights, on emergency vehicles responding to an emergency
 
Alarm devices, by category, include{{Citation needed|date=December 2020|reason=where is this categorised list published}}:
* [[burglar alarm]]s, designed to warn of burglaries. This is often a silent alarm; law enforcement or guards are warned without alerting the [[burglar]], which increases the chances of stopping the theft while in progress.
* [[alarm clock]]s can beep, buzz or ring at a set time to wake a person up or for other reminders
* [[distributed control system]]s (DCS), found in [[nuclear reactor|nuclear power plants]], [[Oil refinery|refineries]] and chemical facilities, also generate alarms to direct the operator's attention to an important event that they need to address.
* alarms in an operation and maintenance (O&M) monitoring system, which alerts an operator to a malfunction of a particular part of the system under monitoring.
** first-out alarm
* safety alarms, which go off if a dangerous condition occurs. Common public safety alarms include: 
**[[civil defense siren]], also known as ''tornado sirens'' or ''air raid sirens''
** [[fire alarm system]]s
*** [[fire alarm notification appliance]]
*** "[[Multiple-alarm fire]]", a locally specific measure of the severity of a fire and the fire-department reaction required.
*** [[smoke detector]]
** [[car alarm]]s
** [[autodialer alarm]], also known as ''community alarm''
** [[personal alarm]]
** Video alarm verification systems provides instant notifications upon the detection of a possible threat verified through a video feed.
** [[wikt:tocsin|tocsin]] – a historical alarm mechanism