Fire alarm initiating devices include smoke detectors, sprinkler water flow switches, manual pull stations, and more.
What is initiating device in fire alarm?
Initiating devices detect a fire emergency and communicate it to the fire alarm control panel. These can be triggered both manually (pull stations), as well as automatically in a response to heat, smoke or flame. When one of these initiating devices is triggered, the control panel will go into an alarm state.
What are examples of fire alarm notification devices?
The most common notification devices installed today are strobes, horn strobes, speakers and speaker strobes.
- Strobes provide synchronized flashes to alert the hearing-impaired occupants to evacuate the premises. …
- Horn strobes combine audible and visual alarms to alert the occupants to evacuate the premises.
What is an example of a popular type of fire alarm?
Ionization/Photoelectric – A favorite of many professionals, a combination ionization and photoelectric smoke detector is a considered by many to be the best type of detector. These devices house both types of smoke detectors (not heat) in one unit to ensure that any presence of smoke is detected as soon as possible.
What are the 2 types of fire alarms?
Generally, there are two types of home smoke alarms: photoelectric and ionization.
What is a fire alarm sound called?
A fire alarm is an electronic sounder or a bell. The alarm makes a loud, high pitched sound to notify people that there is a fire in the building. … Most fire alarm sounders in Europe sound like a siren. The bell makes a continuous ringing sound.
What is the difference between a 2 wire smoke detector and a 4 wire detector?
Differences. The key differences between two and four-wire systems are the numbers of wires and how the wiring is connected to the control panel to trigger the alarm. A four-wire system has separate wires, while a two-wire system uses the same wires to power the unit and to trigger the alarm.
Where are fire alarm notification devices required?
Fire alarm notification appliances are required to be provided in all common-use and public- use exterior areas where the occupants must re-enter the building to reach one or more of the required exits. Exterior areas with all exit(s) having direct access to a public way shall not require notification.
What is the difference between smoke detector and fire alarm?
Put simply, a smoke alarm detects smoke and sounds an alarm. … Put simply, a smoke detector senses smoke only and must be connected to a fire alarm system control panel. Smoke detectors are a detection device only – not an alarm.
What is a five alarm fire?
1. A fire that is so large or intense that it requires the presence of many firefighting units to try to contain it. A five-alarm fire is the reason we heard all of those sirens last night. 2. Someone or something that is very intense or stressful.