A fire alarm is any device or system designed to alert people to the presence of a fire. This may be the familiar smoke detector you find in most homes in the hallway. These are standalone devices because they run on battery power, and when they detect smoke, they release a built-in appliance. The sound is loud enough to wake you up so you can get out of the house. This type of smoke detector will not alert anyone else, such as authorities or neighbors. If there were no one in the house, no one would be alerted to the fire. So you can see that this type of device aims to save lives, not properties.
Many residential homes will have a smoke detector attached to the security system. If this type of smoke detector goes into an alarm state, it will trigger the alarm and sound the horn or siren connected to it. If the system is monitored, the authorities will be notified. This type of device is designed to save lives and property because it can be configured to alert occupants and employees remotely.
Commercial fire alarm system
Fire alarm systems are required in most commercial buildings. The required alarms may vary from state to state and province to province. The National Fire Protection Association website can provide more information about the specific requirements of your building. The basic alarm system consists of the following devices:
Alarm control panel
Trumpets / sirens
In most cases, the installation of a commercial alarm system is determined by specific code requirements. These codes specify where the devices should be placed and who can legally install or update the alarm system. There are federal, state, and local laws that must be obeyed. Failure to comply with any of these rules may result in denial of employment permits, fines, and legal and financial liability.
Fire alarm devices and consumables
Alarms are divided into two groups. There are starters designed to trigger the alarm manually or automatically. The second group is signaling devices designed to alert people to the presence of a fire situation.
1. Alarm control panel
A. The control panel is where all devices connect. When an alarm is detected, the control panel starts sounding an alarm.
2. Smoke detectors
A. It is the most widely used device in most alarm systems. It is designed to detect a fire before it gets out of control. It does not require anyone’s supervision. The control panel monitors these.
3. Heat detectors
A. There are locations where the smoke detector mode does not work. In these cases, a heat detector will be used instead.
4. Pulling the foot
A. A firing station is a starting device placed at the exits of a building, or that can be placed in other locations when dictated by the local code. This device is used by someone who has seen fire and must alert all other building employees.
5. Channel detector
A. Commercial buildings use ceiling pipes for air conditioning. These channels are effective in two things. They provide heat and cold air for the comfort of the people in the building. It also quickly spread fire and smoke over the building. A duct detector is a device that contains a smoke detector and a sampling tube in the duct to check for smoke. If smoke is detected, it will trigger the alarm and also block the channel.
6. Trumpets and sirens
A. These devices are used to notify site personnel of a fire situation. They are audiovisual devices.
7. Announcing fire alarm
A. All alarm systems have a control panel, but this panel and associated keypad may not always be located in an easily accessible area. An announcer is a remote device that provides information about the location of alarms. It can be a graphical announcer representing a physical representation of a building with lights that describes the triggered devices’ location.
These are the essential elements of a commercial fire alarm system. Other assistive devices can be used, and some of them are needed. A commercial fire alarm system is subject to strict rules, as most residential fire alarm systems require very few code requirements.