TFM 12 FIRE ALARM STUDY SHEET
RESOURCES 2026 VERIFIED SOLUTIONS
READY
⫸ Which detector is best a detecting invisible particles? Answer:
Ionization
⫸ Which sensor is better at detecting thick, visible smoke particles?
Answer: Photoelectric
⫸ What is a SPOT TYPE sensor? Answer: a device in which
detecting an element is concentrated at a particular location.
⫸ What is a DIGITAL ALARM COMMUNICATOR
TRANSMITTER ( D.A.C.T)? Answer: A system component at the
protected premises is connected to the detection devices. It has a line
seizure and can connect to a D.A.C.R.
⫸ What is a DIGITAL ALARM COMMUNICATOR RECEIVER?
(D.A.C.R)? Answer: A system component that accepts and displays
signals sent over the public phone network from a D.A.C.T (i.e A.D.T
monitoring center)
⫸ What is an alarm signal? Answer: A signal indicating an
emergency that requires immediate action.
, ⫸ What is a Supervisory signal? Answer: A signal that indicates the
need for action in connection with the SUPERVISION of fire
equipment.
⫸ What is a Trouble signal? Answer: A signal that indicates a fault
with the fire equipment. It must have an audible signal, distinctive
from alarm signals.
⫸ Does an exterior harm for a sprinkler system need to be
supervised? Answer: Yes
⫸ What is a Cloud Chamber Smoke detection? Answer: A detector
draws an air sample into a high humidity, low pressure chamber. The
conditions in the chamber cause the moisture in the air to condense on
the smoke particles, forming a cloud. The density of this cloud is
measured by a photoelectric principle, if it meets a certain criteria, an
alarm is generated.
⫸ What is an Ionization Smoke detector? Answer: A detector that
used a small amount of radio active material to ionize the air between
two differently charged electrodes. When smoke is present between
these electrodes, it causes the conductance of the air to decrease, and
this causes the alarm to trip.
⫸ What is Photo Electric Light Scattering Smoke Detection?
Answer: A detector that uses a light source and a photosensitive
sensor, arranged so that light will only fall on the sensor when smoke
RESOURCES 2026 VERIFIED SOLUTIONS
READY
⫸ Which detector is best a detecting invisible particles? Answer:
Ionization
⫸ Which sensor is better at detecting thick, visible smoke particles?
Answer: Photoelectric
⫸ What is a SPOT TYPE sensor? Answer: a device in which
detecting an element is concentrated at a particular location.
⫸ What is a DIGITAL ALARM COMMUNICATOR
TRANSMITTER ( D.A.C.T)? Answer: A system component at the
protected premises is connected to the detection devices. It has a line
seizure and can connect to a D.A.C.R.
⫸ What is a DIGITAL ALARM COMMUNICATOR RECEIVER?
(D.A.C.R)? Answer: A system component that accepts and displays
signals sent over the public phone network from a D.A.C.T (i.e A.D.T
monitoring center)
⫸ What is an alarm signal? Answer: A signal indicating an
emergency that requires immediate action.
, ⫸ What is a Supervisory signal? Answer: A signal that indicates the
need for action in connection with the SUPERVISION of fire
equipment.
⫸ What is a Trouble signal? Answer: A signal that indicates a fault
with the fire equipment. It must have an audible signal, distinctive
from alarm signals.
⫸ Does an exterior harm for a sprinkler system need to be
supervised? Answer: Yes
⫸ What is a Cloud Chamber Smoke detection? Answer: A detector
draws an air sample into a high humidity, low pressure chamber. The
conditions in the chamber cause the moisture in the air to condense on
the smoke particles, forming a cloud. The density of this cloud is
measured by a photoelectric principle, if it meets a certain criteria, an
alarm is generated.
⫸ What is an Ionization Smoke detector? Answer: A detector that
used a small amount of radio active material to ionize the air between
two differently charged electrodes. When smoke is present between
these electrodes, it causes the conductance of the air to decrease, and
this causes the alarm to trip.
⫸ What is Photo Electric Light Scattering Smoke Detection?
Answer: A detector that uses a light source and a photosensitive
sensor, arranged so that light will only fall on the sensor when smoke
