Alarm systems. Intrusion and hold-up systems - Requirements for combined passive infrared and ultrasonic detectors Ingestion-build-93833 Additional and/or alternative requirements can

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Alarm systems. Intrusion and hold-up systems - Requirements for combined passive infrared and ultrasonic detectors Ingestion-build-93833 Additional and/or alternative requirements canWhat is BS EN 50131 2 5 Requirements for combined passive infrared and ultrasonic detectors about? BS EN 50131 2 5 discusses alarm systems. The aim of the BS EN 50131 series is to ensure the correct operation of the detector by providing the manufacturer with the best industry requirements and test methods to avoid any false situation. BS EN 50131 2 5 is one of the parts of the BS EN 50131 series of standards is for combined passive infrared and