| NFPA 72 §10.3 | Equipment listed for the purpose, compatibility, operating range | L2 Power |
| NFPA 72 §10.6.5 | Primary power: dedicated branch circuit, red disconnect, location identified at the control unit | L2 Power |
| NFPA 72 §10.6.7 | Secondary power: battery or generator plus 4 h battery | L2 Power |
| NFPA 72 §10.6.7.2 | Capacity: 24 h + 5 min; voice and mass notification 15 min; transmitting equipment 5 min | L2 Power |
| NFPA 72 §10.6.10 | Batteries: listing, charger, remote location identified at the control unit | L2 Power |
| NFPA 72 §7.2.1 | Documentation: battery and voltage-drop calculations | L2 Power |
| NFPA 72 §12.3 | Pathway classes A, B, C, D, E, N, X | L2 Power |
| NFPA 72 §12.3.8 | Separate routing of Class A / X outgoing and return conductors | L2 Power |
| NFPA 72 §12.4 | Pathway survivability Levels 0 to 4 | L2 Power |
| NFPA 72 §12.6.1 | Monitoring for integrity: 200 s | L2 Power |
| NFPA 72-2022 §17.5.2, §17.7.4.2.3.1 | Partitions that reach within the top 15% of the ceiling height create separate rooms | L2 Layout |
| NFPA 72-2022 §17.5.3.1 | Total coverage: combustible blind spaces (50 ft², 6 in.), open-grid ceilings (1/4 in., 70%), plenum returns | L2 Layout |
| NFPA 72-2022 §17.6.2, Table 17.6.2.1 | Heat detector temperature classes and colors; rating at least 20°F above the maximum ceiling temperature | L2 Layout |
| NFPA 72-2022 §17.6.3.1.1 | Heat detector spacing: listed spacing, S/2 to walls, 0.7S rule | L2 Layout |
| NFPA 72-2022 Table 17.6.3.5.1, §17.6.3.5 | Ceiling-height multipliers for heat detector spacing (10 to 30 ft); spacing need not be below 0.4 times the ceiling height | L2 Layout |
| NFPA 72-2022 §17.6.3.2 and §17.6.3.4 | Solid-joist ceilings: 50% of listed spacing at right angles to the joists; sloped ceilings: first row within 36 in. of the peak | L2 Layout |
| NFPA 72-2022 §17.7.4.2.3.1 | Smoke detector spacing on smooth ceilings: 30 ft nominal, 15 ft to walls, 0.7S | L2 Layout |
| NFPA 72-2022 §17.7.4.2.4.2 | Beam construction for smoke detectors: 0.1H and 0.4H rules; corridors 15 ft or less wide with perpendicular beams | L2 Layout |
| NFPA 72-2022 §17.7.4.6 and §17.7.4.7 | Air-sampling (transport time, pipe design, labeling) and projected-beam detectors (stable mounting, listing limits, A.17.7.4.7 spacing guide) | L2 Layout |
| NFPA 72-2022 §17.7.5, A.17.7.5.1 | HVAC: keep detectors out of direct airflow; 36 in. from diffusers and returns | L2 Layout |
| NFPA 72-2022 §17.7.6 | Duct smoke detectors: manufacturer's instructions, access doors or panels for cleaning, remote indicators; location per NFPA 90A | L2 Layout |
| NFPA 72-2022 Table 17.7.7.3.3.2 | Smoke detector coverage in high air movement areas (air changes per hour) | L2 Layout |
| NFPA 72-2022 §17.8, §17.13 and §17.17 | Flame detectors (line of sight, nuisance sources); waterflow devices; supervisory (tamper, pressure, temperature) devices | L2 Layout |
| NFPA 72-2022 §17.15 | Manual fire alarm boxes: 42 to 48 in., within 5 ft of exits, 200 ft travel, conspicuous and unobstructed | L2 Layout |
| NFPA 72-2022 Table 18.5.5.7.1(a) and (b) | Candela by room size for wall-mounted and ceiling-mounted visible appliances | L2 Layout |
| NFPA 72-2022 §18.5.5.8 and §18.5.5.10 | Corridor spacing (15 cd, 15 ft, 100 ft) and sleeping-room candela (110 or 177) | L2 Layout |
| NFPA 72-2022 §18.4 | Audibility: public, private, and sleeping modes; 110 dBA limit; 520 Hz; mounting height of audible appliances | L2 Layout |
| NFPA 72-2022 §7.4, §7.4.5 | Shop drawing contents; floor plan items (level, north arrow, graphic scale) | L2 Layout |
| NFPA 72 §21.2.4 | ECF interface within 3 ft of the controlled component; 2022 exception for Class D control circuits | L2 Control |
| NFPA 72 §21.3 | Elevator Phase I recall: lobby detector within 21 ft of each door centerline; designated and alternate levels | L2 Control |
| NFPA 72 §21.4 | Elevator shutdown: heat detector within 2 ft of each sprinkler, no-delay waterflow, monitored shunt-trip power | L2 Control |
| NFPA 72 §21.8 | HVLS fans interlocked to shut down on waterflow where NFPA 13 requires it | L2 Control |
| NFPA 72 §17.7.6 | Detectors for control of smoke spread: duct detectors and door release (24 in. header rule) | L2 Control |
| NFPA 72 §17.17 | Supervisory signal-initiating devices: valve tamper, pressure, temperature, water level | L2 Control |
| NFPA 72 §23.8.1 | Pre-signal (§23.8.1.1) and positive alarm sequence (§23.8.1.2.1.1): 15 s and 180 s | L2 Control |
| NFPA 72 §23.8.5.4 | Alarm verification feature: smoke detectors, 60 s total limit | L2 Control |
| NFPA 72 §10.17.2 | Notification appliance control circuits: monitored, one notification zone each | L2 Control |
| NFPA 72 §18.4.11 and Annex D | Voice intelligibility: ADS, STI and CIS criteria | L2 Control |
| NFPA 72 Ch. 24, §24.3.14 and §24.10 | EVACS, mass notification; Class N/X separation (one-third of diagonal); two-way communication (24 h + 4 h power, posted instructions) | L2 Control |
| NFPA 72 §26.3 to §26.5 | Central, proprietary, and remote supervising stations | L2 Control |
| NFPA 72 §26.6.3 and §26.6.4 | Performance-based paths (60 min / 6 h) and DACT requirements (two means, line seizure) | L2 Control |
| NFPA 72 §14.4.1 | Initial acceptance testing; AHJ notified beforehand | L2 Control |
| NFPA 72 Table 14.4.3.2 | Test methods: item 8 power, item 15 circuit integrity, items 20 and 24 interfaces | L2 Control |
| NFPA 72 §14.4.2.4 to §14.4.2.6 | Reacceptance after site-specific or executive software changes; remote changes | L2 Control |
| NFPA 72 §14.6.1 and §7.5 | Close-out documents, record of completion (§7.5.6), site-specific software (§7.5.7) | L2 Control |
| NFPA 72 §14.2.4 | Notification before and after testing; coordination with the owner (14.2.4.3) | L2 Testing |
| NFPA 72 §14.2.5 | Documentation the owner provides to service personnel, including software revisions | L2 Testing |
| NFPA 72 §14.2.10 | Written test plan; plan and results filed with the test records | L2 Testing |
| NFPA 72 Table 14.3.1 | Visual inspection frequencies and methods | L2 Testing |
| NFPA 72 §14.4.2 and A.14.4.2 | Reacceptance: hardware, site-specific and executive software, remote changes, like-for-like replacement | L2 Testing |
| NFPA 72 Table 14.4.3.2 items 2-4 | Control unit, trouble signals (ring-back), transmission equipment and its note | L2 Testing |
| NFPA 72 Table 14.4.3.2 items 8-9 and notes d-f | Secondary power, VRLA battery tests, charger voltage, automated load tests | L2 Testing |
| NFPA 72 Table 14.4.3.2 item 15 | Conductors: circuit integrity at 10% of devices for initial and reacceptance | L2 Testing |
| NFPA 72 Table 14.4.3.2 item 17 | Initiating devices: smoke, heat, duct, beam, aspirating, multi-sensor, supervisory, waterflow | L2 Testing |
| NFPA 72 Table 14.4.3.2 item 18 | Special hazard equipment: abort, cross-zone, solenoid, squib | L2 Testing |
| NFPA 72 Table 14.4.3.2 items 22 and 24 | Notification appliances (SPL, candela marking) and emergency control function interfaces | L2 Testing |
| NFPA 72 §14.4.4 | Frequency, 18-month cap for shutdown testing, sensitivity, heat detector sample, CO records | L2 Testing |
| NFPA 72 §14.6 | Permanent records and inspection, testing, and maintenance records | L2 Testing |
| NFPA 72 §7.6.6 and Fig. 7.8.2 | Record of Inspection and Testing and its supplementary forms | L2 Testing |
| NFPA 72 §7.7 | Record maintenance, supervising station records, documentation cabinet | L2 Testing |
| NFPA 72 §10.21 | Impairments: owner notification, record kept 1 year after correction | L2 Testing |
| NFPA 72 §10.5.3 | Qualifications of inspection, testing, and service personnel | L2 Testing |
| NFPA 72 A.14.4.3 and A.14.4.3.2 | Annex: silent testing, ohmic baseline and battery capacity formula, owner notice of suspected low SPL, documenting devices not tested | L2 Testing |
| NFPA 72 §14.6.4, §14.6.2.2 and §7.5.6.6 | Simulated-operation note, heat sample record retention, revised and replacement records of completion | L2 Testing |
| NFPA 72 §10.21 | Impairments: owner, supervising station, AHJ at more than 8 h, mitigation per AHJ, end-of-impairment notice, 1-year record | L2 Fix |
| NFPA 72 §10.3 | Equipment listed for purpose; compatibility of devices on IDC and SLC with the control unit | L2 Fix |
| NFPA 72 §10.6 | Power supplies: primary branch circuit, secondary battery, charger | L2 Fix |
| NFPA 72 §12.3 | Pathway classes A, B, X: behavior with open, ground, and short | L2 Fix |
| NFPA 72 §12.6 | Monitoring for integrity: open and ground annunciated within 200 s | L2 Fix |
| NFPA 72 §14.2.2 | Impairments, deficiencies (written notice within 24 h), recalls, observations | L2 Fix |
| NFPA 72 §14.4.2 and A.14.4.2 | Reacceptance testing after added, deleted, or changed devices, hardware, and software | L2 Fix |
| NFPA 72 Table 14.4.3.2 item 2 | Control unit functions after hardware repair | L2 Fix |
| NFPA 72 Table 14.4.3.2 item 9 and A.14.4.3.2 | Batteries and charger tests, including the 13.26 V float check on 12 V VRLA; annex advice to replace both units of a failing series string | L2 Fix |
| NFPA 72 Table 14.4.3.2 items 3(3), 4(2), 11, 26(1) | Ground detection, DACT two means of transmission, annunciators, alarm verification delay | L2 Fix |
| NFPA 72 Table 14.4.3.2 item 15 | Conductors: stray voltage 1 V, ground, short, loop resistance, 10% open-connection test | L2 Fix |
| NFPA 72 §14.4.4.3 | Smoke detector sensitivity: out of range means clean or replace | L2 Fix |
| NFPA 72 §17.6.2 and Table 17.6.2.1 | Heat detector rating at least 20°F above maximum ceiling temperature; classes | L2 Fix |
| NFPA 72 §17.7 | Smoke detector location and environment (air velocity, temperature, humidity) | L2 Fix |
| NFPA 72 §26.6.4 | DACT: line seizure, two means of transmission, 4-minute trouble indication | L2 Fix |
| NFPA 72-2022 §3.2.2 | Definition of the authority having jurisdiction (AHJ) | L2 Projects |
| NFPA 72-2022 §10.21 | Impairments: notify owner, service provider reports to AHJ after 8 h, notify at end, record 1 year | L2 Projects |
| NFPA 72-2022 §14.2.4 | Notify those who receive signals and occupants before and after testing | L2 Projects |
| NFPA 72-2022 Ch. 7 | Documentation: shop drawings, record drawings, record of completion | L2 Projects |
| NFPA 72-2022 Ch. 21 | Emergency control functions and interfaces (elevator recall, HVAC): trade coordination | L2 Projects |