SOUTH CAROLINA (SC) BURGLAR ALARM LICENSE PRACTICE TEST EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM
UPDATE 2026/2027..
Core Domains
1. South Carolina Burglar Alarm Licensing Laws and Regulations
2. Electrical Theory and Circuitry Basics
3. Low-Voltage Wiring and Installation Standards
4. Sensor and Detection Device Technologies
5. Control Panel Programming and Operation
6. Signaling and Communication Methods
7. System Testing, Troubleshooting, and Maintenance
8. Professional Ethics and Consumer Relations
Introduction
This comprehensive practice examination is designed to evaluate the competency, technical knowledge,
and regulatory understanding of professionals seeking licensure in the burglar alarm industry. The
assessment measures essential skills including low-voltage installation practices, sensor placement
optimization, system troubleshooting, and strict adherence to state licensing statutes and safety codes.
Featuring a rigorous combination of direct multiple-choice inquiries and applied scenario-based
challenges, the examination emphasizes real-world application, critical thinking, and sound professional
decision-making. Candidates must demonstrate the ability to analyze complex security environments
while complying with all applicable legal mandates and industry standards for residential and commercial
installations.
,Under South Carolina law, what is the primary regulatory body responsible for licensing burglar
alarm system contractors and businesses?
A. South Carolina Department of Labor, Licensing and Regulation (LLR)
B. South Carolina Law Enforcement Division (SLED)
C. South Carolina Department of Consumer Affairs
D. South Carolina State Fire Marshal Office
🟢 A. South Carolina Department of Labor, Licensing and Regulation (LLR)
🔴 RATIONALE: The South Carolina LLR oversees the licensing and regulation of burglar alarm
businesses and contractors within the state to ensure consumer protection and standard
compliance.
Which National Electrical Code (NEC) article primarily governs the installation of Class 2 remote-
control, signaling, and power-limited circuits typically used in alarm systems?
A. Article 250
B. Article 300
C. Article 725
D. Article 760
🟢 C. Article 725
🔴 RATIONALE: NEC Article 725 specifically covers power-limited and remote-control signaling
circuits, which encompass standard low-voltage alarm wiring topologies.
When calculating battery standby requirements for a 12-volt control panel drawing a total quiescent
current of 500 mA, what minimum amp-hour (Ah) capacity is required for a 24-hour standby period,
excluding alarm current?
A. 6.0 Ah
B. 10.0 Ah
C. 12.0 Ah
,D. 24.0 Ah
🟢 C. 12.0 Ah
🔴 RATIONALE: Multiply the current draw in amperes (0.5 A) by the required hours (24 h) to find
the total amp-hours needed: 0.5 multiplied by 24 equals 12.0 Ah.
A technician is installing a dual-technology motion detector in a commercial warehouse prone to
temperature fluctuations and drafts. Which combination of technologies minimizes false alarms
best in this environment?
A. Passive Infrared and Magnetic Reed
B. Microwave and Passive Infrared
C. Audio Discrimination and Vibration Sensing
D. Capacitance and Photoelectric Beam
🟢 B. Microwave and Passive Infrared
🔴 RATIONALE: Combining Passive Infrared (PIR) heat detection with active Microwave motion
detection requires both sensors to trip simultaneously, significantly reducing false alarms from
drafts.
What is the minimum recommended gauge size for standard low-voltage security wire runs under
250 feet for powered peripheral devices drawing minimal current?
A. 22 AWG
B. 18 AWG
C. 14 AWG
D. 12 AWG
🟢 A. 22 AWG
🔴 RATIONALE: 22 AWG or 18 AWG is standard for typical low-draw sensor runs under 250 feet,
though 18 AWG is frequently preferred for longer distance voltage drop mitigation.
, In a normally closed (NC) burglar alarm loop, what state does the loop exhibit during a secure,
non-alarm condition?
A. High resistance or open circuit
B. Continuous closed circuit allowing current flow
C. Grounded to earth potential
D. Alternating current oscillation
🟢 B. Continuous closed circuit allowing current flow
🔴 RATIONALE: A normally closed loop maintains a continuous electrical path during normal
conditions; opening the loop (such as opening a door contact) triggers the alarm event.
Which device is utilized to prevent false alarms caused by minor power surges induced on exterior
perimeter detection circuits?
A. Step-down transformer
B. Transient surge suppressor
C. End-of-line resistor
D. Relay coil isolator
🟢 B. Transient surge suppressor
🔴 RATIONALE: Surge suppressors clamp voltage spikes induced by lightning or external
transients, protecting sensitive control panel inputs from false triggering or damage.
According to standard industry practices, where should an end-of-line (EOL) resistor be physically
placed in a supervised security circuit?
A. Inside the main control panel enclosure
B. At the primary power transformer
C. At the furthest detection device in the zone loop
D. Directly across the auxiliary power terminals
🟢 C. At the furthest detection device in the zone loop
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |LATEST EXAM
UPDATE 2026/2027..
Core Domains
1. South Carolina Burglar Alarm Licensing Laws and Regulations
2. Electrical Theory and Circuitry Basics
3. Low-Voltage Wiring and Installation Standards
4. Sensor and Detection Device Technologies
5. Control Panel Programming and Operation
6. Signaling and Communication Methods
7. System Testing, Troubleshooting, and Maintenance
8. Professional Ethics and Consumer Relations
Introduction
This comprehensive practice examination is designed to evaluate the competency, technical knowledge,
and regulatory understanding of professionals seeking licensure in the burglar alarm industry. The
assessment measures essential skills including low-voltage installation practices, sensor placement
optimization, system troubleshooting, and strict adherence to state licensing statutes and safety codes.
Featuring a rigorous combination of direct multiple-choice inquiries and applied scenario-based
challenges, the examination emphasizes real-world application, critical thinking, and sound professional
decision-making. Candidates must demonstrate the ability to analyze complex security environments
while complying with all applicable legal mandates and industry standards for residential and commercial
installations.
,Under South Carolina law, what is the primary regulatory body responsible for licensing burglar
alarm system contractors and businesses?
A. South Carolina Department of Labor, Licensing and Regulation (LLR)
B. South Carolina Law Enforcement Division (SLED)
C. South Carolina Department of Consumer Affairs
D. South Carolina State Fire Marshal Office
🟢 A. South Carolina Department of Labor, Licensing and Regulation (LLR)
🔴 RATIONALE: The South Carolina LLR oversees the licensing and regulation of burglar alarm
businesses and contractors within the state to ensure consumer protection and standard
compliance.
Which National Electrical Code (NEC) article primarily governs the installation of Class 2 remote-
control, signaling, and power-limited circuits typically used in alarm systems?
A. Article 250
B. Article 300
C. Article 725
D. Article 760
🟢 C. Article 725
🔴 RATIONALE: NEC Article 725 specifically covers power-limited and remote-control signaling
circuits, which encompass standard low-voltage alarm wiring topologies.
When calculating battery standby requirements for a 12-volt control panel drawing a total quiescent
current of 500 mA, what minimum amp-hour (Ah) capacity is required for a 24-hour standby period,
excluding alarm current?
A. 6.0 Ah
B. 10.0 Ah
C. 12.0 Ah
,D. 24.0 Ah
🟢 C. 12.0 Ah
🔴 RATIONALE: Multiply the current draw in amperes (0.5 A) by the required hours (24 h) to find
the total amp-hours needed: 0.5 multiplied by 24 equals 12.0 Ah.
A technician is installing a dual-technology motion detector in a commercial warehouse prone to
temperature fluctuations and drafts. Which combination of technologies minimizes false alarms
best in this environment?
A. Passive Infrared and Magnetic Reed
B. Microwave and Passive Infrared
C. Audio Discrimination and Vibration Sensing
D. Capacitance and Photoelectric Beam
🟢 B. Microwave and Passive Infrared
🔴 RATIONALE: Combining Passive Infrared (PIR) heat detection with active Microwave motion
detection requires both sensors to trip simultaneously, significantly reducing false alarms from
drafts.
What is the minimum recommended gauge size for standard low-voltage security wire runs under
250 feet for powered peripheral devices drawing minimal current?
A. 22 AWG
B. 18 AWG
C. 14 AWG
D. 12 AWG
🟢 A. 22 AWG
🔴 RATIONALE: 22 AWG or 18 AWG is standard for typical low-draw sensor runs under 250 feet,
though 18 AWG is frequently preferred for longer distance voltage drop mitigation.
, In a normally closed (NC) burglar alarm loop, what state does the loop exhibit during a secure,
non-alarm condition?
A. High resistance or open circuit
B. Continuous closed circuit allowing current flow
C. Grounded to earth potential
D. Alternating current oscillation
🟢 B. Continuous closed circuit allowing current flow
🔴 RATIONALE: A normally closed loop maintains a continuous electrical path during normal
conditions; opening the loop (such as opening a door contact) triggers the alarm event.
Which device is utilized to prevent false alarms caused by minor power surges induced on exterior
perimeter detection circuits?
A. Step-down transformer
B. Transient surge suppressor
C. End-of-line resistor
D. Relay coil isolator
🟢 B. Transient surge suppressor
🔴 RATIONALE: Surge suppressors clamp voltage spikes induced by lightning or external
transients, protecting sensitive control panel inputs from false triggering or damage.
According to standard industry practices, where should an end-of-line (EOL) resistor be physically
placed in a supervised security circuit?
A. Inside the main control panel enclosure
B. At the primary power transformer
C. At the furthest detection device in the zone loop
D. Directly across the auxiliary power terminals
🟢 C. At the furthest detection device in the zone loop
