EN 54-12 Fire detection and fire alarm systems – Part 12: Smoke detectors – Line detectors using an optical beam

EN 54-12 Fire detection and fire alarm systems – Part 12: Smoke detectors – Line detectors using an optical beam — Part 1: Introduction; — Part 2: Control and indicating equipment; — Part 3: Fire alarm devices — Sounders; — Part 4: Power supply equipment; — Part 5: Heat detectors — Point detectors; — Part […]

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