BS EN 54-2. Fire detection and fire alarm systems. Control and indicating equipment|Fire alarms, Alarm systems, Fire detectors, Fire safety in buildings, Fire safety, Warning devices, Control equipment, Signal devices, Performance, Defects, Acoustic signals, Computerized control, Computer software, Indicator lights, Colour, Visual signals, Marking, Electric power systems, Control systems, Testing conditions, Type testing, Specimen preparation, Electrical testing, Performance testing, Environmental testing, Damp-heat tests, Cold tests, Impact testing, Vibration testing, Vibration, Design