Which of the following is an alarm initiating device?
Fire alarm initiating devices include smoke detectors, manual pull stations, sprinkler water flow switches, and many more!
What are the input devices in fire alarm system?
Some of the fundamental fire alarm input devices are detectors, manual call points and input modules. Detectors have many types depending on which fire indication they detect and their detection principles. Some of the most common detectors are: smoke detectors, heat detectors, flame detectors etc.
What are the different types of fire alarm systems?
There are three main types of fire alarm monitoring systems: ionization, photoelectric, and combination alarms. Below we will discuss each type of alarm and how they can help detect fires.
What is an SLC fire alarm?
Signaling Line Circuit (SLC) The Signaling Line Circuit or SLC in a fire alarm system is a power and computer style data bus. It is used to provide power to the computers inside each module and detector (each device), carry information from the panel to the devices, and carry information from each device to the panel.
Which type of alarm initiating device uses molecular action to detect fire?
B. Fire-gas detectors initiate alarm signals faster than any other type of detector.
What are the initiation devices?
Automatic Initiating devices
- Heat detectors.
- Smoke detectors.
- Duct detectors.
- Beam detectors.
- Tamper switches.
- Fire sprinkler water flow switches.
What is alarm output device?
Alarm Output Devices Bells, sounders, horns and speakers are part of audio notification – strobes, flashing lights and beacons are part of visual notification. Speakers are generally used to transmit a pre-recorded voice message to alert the occupants.
What is NAC in fire alarm?
A: Each NAC (Notification Appliance Circuit) in a fire alarm panel or booster power supply has a maximum current rating. This information can be found in the manuals provided with the panels. The total current draw for all the devices connected to the circuit cannot exceed the NAC rating.
What is MCP in fire alarm?
A manual call point is a device which enables personnel to raise an alarm in the event of a fire incident by pressing a frangible element to activate the alarm system. A fire alarm call point should be installed at a height of 1.4m above floor level at easily accessible and conspicuous positions.