Review Flashcards
Class C FA circuit
communications between panels
what is the minimum candela for visual notification devices in a corridor
15 candela A
what are 3 circuits you are not allowed to combine with power limited fire alarm
light power
class one
non power limited fire alarm
why does a fire alarm IDC monitor for grounds and opens but not short circuits
goes into alarm when there is a short
where is a resistor placed for an open loop door contact
parallel
elevator shunt trip
stop ELV from running before sprinklers start running.
what type of access control card has memory
smart card
what type of system uses a prerecorded or live message.
evac - emergency voice/alarm communication
what type of glass is used for high security application
wired
what type of glass is between two thin pieces of plastic film
laminated
what type of access control credential is most difficult to duplicate
bio-metric
where is a resistor placed for a closed loop door contact
series
Class D FA circuit
Fail safe
NFPA 99
Health care facilities code
How does a ionization type smoke detector work
radioactive material americium 241
Public mode signaling decibel requirements
15 dbA above average sound pressure level or 5 dbA above max sound sustained for one minute
how does a photoelectric smoke detector work
light obscuration or light scattering
control relays and modules must be installed within _____ from the equipment they are controlling
3 feet
what device is used for two way communication to the FCC
fire fighters telephone
what type of glass breaks into large jagged pieces
plate
what is specific area protection
protects one specific location
where must a smoke detector be placed in an elevator lobby
within 21 feet of the center line of its controls
what term is used to describe when a bio metric reader accepts an invalid bio metric input
illegitimate use or false acceptance
name and describe the 3 most common types of alarm system
local - in home
supervisory - high rise with security personnel 24/7
central
what uses reversed polarity in an alarm state to operate appliances
NAC - Notification appliance circuit
what is Point of entry protection
emphasis placed on specific point which might allow entry or exit from a secure area
what type of glass break detector should be used on plexiglas
shock sensor
where can a smoke or heat detector be placed on a wall.
4-12 inches from the ceiling
what height must visual notification devices be mounted in a corridor
80-96 inches
A break beam sensor is considered ________ detection.
active
what state is most common for magnetic contacts
normally closed
what type of glass shatters into thousands of tiny pieces
tempered
where should a roller plunger contact be installed and why
hinge side of door
more secure, less likely to be damaged, and less likely to cause false alarms
in a new construction home, what 3 areas require a smoke detector
bedrooms
each floor
outside bedroom
what type of glass is made of plastic and snaps easily
Plexiglas
NFPA 70
National electric code
Class A FA circuit
Conductors return to panel
NFPA 72
National fire alarm and signaling code
NFPA 101
life safety code
Class B FA circuit
daisy chained with an EOL
what type of term is used to describe a magnetic contact normal state
normally open or normally closed
Class X FA circuit
Class A with the addition of an isolation module between each device
what are the two most commonly used credential types
proximity or mag strip
what makes an access control system so beneficial and effective
ability to easily remove/add users and keys w/o re-keying a whole building
what are the 3 most common types of fire alarm circuits
IDC - uses EOL
NAC - uses reverse polarity, a blocking diode and an EOL
SLC - addressable, can t tap, polls devices
How Many sets of contacts are on a DPDT relay
2 sets of contacts
NO1 COM1 NC1, and NO2 COM2 NC2
what is the difference between a control module and a relay module used in fire alarm systems
unlike relays control modules are supervised with an EOL resistor
what is spot protection
protects one specific object
what NFPA volume is and section covers fire alarm wiring
NFPA 70 Sec 760
Private mode signaling disciple requirements
15 dbA above average sound pressure level or 5 dbA above max sound sustained for one minute
what is perimeter protection
provides protection of the perimeter area of a building
a fire alarm system dialer has what requirements for the communication pathways connected to that dialer
uses RJ31X Jack. 2 pathways one must be a dedicated line
when a security system seizes a phone line what happens
the shortening bar engages on the RJ31X jack
What two signals can are duct detectors permitted to generate?
supervisory or alarm
