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How do you manually activate a fire alarm?
Manual fire alarm activation is typically achieved through the use of a pull station or call point, which then sounds the evacuation alarm for the relevant building or zone.
How does fire alarm system work?
A fire alarm system warns people when smoke, fire, carbon monoxide or other fire-related emergencies are detected. These alarms may be activated automatically from smoke detectors, and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations.
How are manual pull stations activated?
Single-action pull stations are simple in their design — they are fitted in a wall without any coverings or special activation mechanisms. These pull stations are activated by pulling the handle down.
What is automatic fire alarm system?
Automatic Fire detection and alarm system is primarily a life safety system meant for detecting the fire at the early stages and alarm the occupants. The fire detection system are also used for automatic activation of fire extinguishing systems such as spray systems, water mist systems and gas suppression systems.
What does a basic fire alarm system consist of?
In essence, a fire alarm system has four key functions: detect, alert, monitor, and control. These sophisticated systems use a network of devices, appliances, and control panels to carry out these four functions.
Where are fire alarm pull stations required?
NFPA 72 requires a pull station within 60 inches of every individual exit, and for groups of doors that are more than 40 feet wide away from each other, there must be a pull station on both sides of the grouping. The placement of fire alarm pull stations is critical to ensuring they provide the protection intended.
How does alarm provide security?
A security alarm is a system designed to detect intrusion, such as unauthorized entry, into a building or other areas such as a home or school. Some alarm systems serve a single purpose of burglary protection; combination systems provide fire and intrusion protection.
Which system recognizes when a fire is occurring and activates the fire alarm system?
Upon fire occurrence, one or more detectors will operate. This action closes the circuit, which the fire control panel recognizes as an emergency condition. The panel will then activate one or more signaling circuits to sound building alarms and summon emergency help.
What are the three methods of transmitting fire alarm signals?
Wired.