Alarm System Installer Licensing Exam
Practice Test Questions And Correct
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Rationales 2026 Q&A Instant Download
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1. What is the primary purpose of a burglar alarm system?
A) To automatically call the fire department
B) To prevent water damage
C) To detect unauthorized entry and alert occupants or authorities
D) To monitor electrical usage
Rationale: The main function of a burglar alarm system is to detect
unauthorized entry and alert occupants or law enforcement.
2. Which type of sensor detects changes in infrared radiation?
A) Magnetic contact
B) Passive infrared (PIR) sensor
C) Ultrasonic sensor
D) Smoke detector
Rationale: PIR sensors detect movement by sensing changes in infrared
radiation emitted by objects.
3. What is a common method for preventing false alarms in motion detectors?
A) Installing on vibrating surfaces
B) Proper placement away from heat sources and pets
, C) Increasing sensitivity to maximum
D) Using only ultrasonic sensors
Rationale: Proper placement prevents environmental factors like heat or
pets from triggering false alarms.
4. Which component is used to detect the opening of doors and windows?
A) Glass break sensor
B) PIR sensor
C) Magnetic contact switch
D) Smoke detector
Rationale: Magnetic contacts are installed on doors and windows to
detect when they open or close.
5. In alarm systems, what does “normally closed” (NC) mean for a circuit?
A) Circuit is always open
B) Circuit triggers only when power fails
C) Circuit is closed in normal state and opens when activated
D) Circuit requires manual activation
Rationale: NC circuits remain closed during normal operation and open to
signal an alarm condition.
6. Which wiring standard is commonly used for alarm system circuits?
A) RG-6 coaxial
B) 18–22 gauge twisted pair
C) Cat 5 Ethernet
D) 10 gauge solid copper
Rationale: Low-voltage alarm circuits typically use 18–22 gauge twisted
pair wiring for reliability.
7. Which type of alarm system communicates with a central monitoring
station?
A) Local alarm
B) Monitored alarm
C) Standalone siren
D) Wireless-only alarm
, Rationale: Monitored alarms relay signals to a central station, which can
notify authorities.
8. What is the purpose of an end-of-line (EOL) resistor in an alarm circuit?
A) Reduce power consumption
B) Increase siren volume
C) Supervise the circuit for tampering or open faults
D) Amplify sensor signals
Rationale: EOL resistors allow the control panel to detect if a circuit is cut
or tampered with.
9. Which component detects broken glass?
A) PIR sensor
B) Acoustic glass break sensor
C) Magnetic contact
D) Smoke detector
Rationale: Glass break sensors detect the sound frequency of breaking
glass.
10.When installing an alarm system, what is the minimum recommended
height for wall-mounted motion detectors?
A) 2 feet
B) 6–8 feet
C) 10 feet
D) Floor level
Rationale: Installing motion detectors at 6–8 feet height optimizes
coverage and reduces false alarms from pets.
11.Which type of battery is typically used in backup alarm systems?
A) Alkaline AA
B) Nickel-cadmium
C) Sealed lead-acid (SLA) or gel cell
D) Lithium coin cell
Rationale: SLA or gel cells provide reliable backup power for alarm panels
during outages.
Practice Test Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A Instant Download
1. What is the primary purpose of a burglar alarm system?
A) To automatically call the fire department
B) To prevent water damage
C) To detect unauthorized entry and alert occupants or authorities
D) To monitor electrical usage
Rationale: The main function of a burglar alarm system is to detect
unauthorized entry and alert occupants or law enforcement.
2. Which type of sensor detects changes in infrared radiation?
A) Magnetic contact
B) Passive infrared (PIR) sensor
C) Ultrasonic sensor
D) Smoke detector
Rationale: PIR sensors detect movement by sensing changes in infrared
radiation emitted by objects.
3. What is a common method for preventing false alarms in motion detectors?
A) Installing on vibrating surfaces
B) Proper placement away from heat sources and pets
, C) Increasing sensitivity to maximum
D) Using only ultrasonic sensors
Rationale: Proper placement prevents environmental factors like heat or
pets from triggering false alarms.
4. Which component is used to detect the opening of doors and windows?
A) Glass break sensor
B) PIR sensor
C) Magnetic contact switch
D) Smoke detector
Rationale: Magnetic contacts are installed on doors and windows to
detect when they open or close.
5. In alarm systems, what does “normally closed” (NC) mean for a circuit?
A) Circuit is always open
B) Circuit triggers only when power fails
C) Circuit is closed in normal state and opens when activated
D) Circuit requires manual activation
Rationale: NC circuits remain closed during normal operation and open to
signal an alarm condition.
6. Which wiring standard is commonly used for alarm system circuits?
A) RG-6 coaxial
B) 18–22 gauge twisted pair
C) Cat 5 Ethernet
D) 10 gauge solid copper
Rationale: Low-voltage alarm circuits typically use 18–22 gauge twisted
pair wiring for reliability.
7. Which type of alarm system communicates with a central monitoring
station?
A) Local alarm
B) Monitored alarm
C) Standalone siren
D) Wireless-only alarm
, Rationale: Monitored alarms relay signals to a central station, which can
notify authorities.
8. What is the purpose of an end-of-line (EOL) resistor in an alarm circuit?
A) Reduce power consumption
B) Increase siren volume
C) Supervise the circuit for tampering or open faults
D) Amplify sensor signals
Rationale: EOL resistors allow the control panel to detect if a circuit is cut
or tampered with.
9. Which component detects broken glass?
A) PIR sensor
B) Acoustic glass break sensor
C) Magnetic contact
D) Smoke detector
Rationale: Glass break sensors detect the sound frequency of breaking
glass.
10.When installing an alarm system, what is the minimum recommended
height for wall-mounted motion detectors?
A) 2 feet
B) 6–8 feet
C) 10 feet
D) Floor level
Rationale: Installing motion detectors at 6–8 feet height optimizes
coverage and reduces false alarms from pets.
11.Which type of battery is typically used in backup alarm systems?
A) Alkaline AA
B) Nickel-cadmium
C) Sealed lead-acid (SLA) or gel cell
D) Lithium coin cell
Rationale: SLA or gel cells provide reliable backup power for alarm panels
during outages.
