ISO 7240-15:2014

Overview - ISO 7240-15:2014 (Fire detection and alarm systems)

ISO 7240-15:2014 defines requirements, test methods and performance criteria for point-type fire detectors that combine smoke and heat sensors in a single enclosure. The standard covers detectors in which at least one smoke sensor and at least one heat-responsive sensor are present and the signals are combined to determine alarm conditions. It clarifies scope limits (single-sensor performance alone does not imply conformity to other ISO 7240 parts) and notes national radiation rules for detectors that may contain radioactive materials.

Key topics and technical requirements

• Combined smoke + heat detection: Specification for multi-sensor point detectors where smoke and heat sensor signals are integrated to improve detection reliability and reduce false alarms.
• Performance criteria and test methods: Detailed tests for smoke and heat response, fire sensitivity, repeatability and reproducibility of responses.
• Environmental and mechanical durability: Tests include dry/cold/damp heat endurance, corrosion (SO2), shock, impact, vibration, and electromagnetic compatibility (EMC).
• Operational robustness: Requirements for on-site and manufacturer adjustments, protection against ingress of foreign bodies, monitoring of detachable detectors, and software-controlled detector considerations.
• Marking, data and reporting: Requirements for marking, data provision and test reports to support installation and conformity assessment.
• Special notes: New in this edition - smoke sensors using scattered or transmitted light must be marked with one of two nominal response threshold bands; additional requirements for detectors with more than one smoke sensor. Detectors developed for specific risks or working on different principles are outside this part and may use it only as guidance.
• Radiation / regulatory compliance: Detectors containing radioactive materials must meet national radiation-protection requirements and align with NEA/OECD recommendations.

Practical applications and who uses it

ISO 7240-15 is used by:

• Detector manufacturers developing or certifying multi-sensor smoke/heat point detectors.
• Test laboratories and conformity assessors conducting standardized performance, environmental and EMC testing.
• System designers and specifiers choosing detectors for buildings where false alarm resistance and broad fire-type coverage are required.
• Installers, authorities having jurisdiction (AHJs) and consultants referencing harmonized requirements for product selection, installation guidance and compliance.
• Procurement teams and facility managers seeking detectors with demonstrated robustness to environmental and mechanical stressors.

Keywords: ISO 7240-15:2014, fire detection, alarm systems, point-type detectors, smoke and heat sensors, multi-sensor detectors, test methods, performance criteria.

Related standards

• ISO 7240-1 (General and definitions)
• ISO 7240-5 (Point-type heat detectors)
• ISO 7240-7 (Point-type smoke detectors)
• ISO 7240-14 (Design, installation, commissioning and service)
• ISO 209 (Aluminium composition)