Alarm systems. Intrusion and hold-up systems - Warning devices
Alarm systems. Intrusion and hold-up systems - Warning devices
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1 Scope This European Standard includes requirements for warning devices used for notification in intrusion and hold up alarm systems installed in buildings. Four grades of warning device are described corresponding to each of the four security grades given in EN 50131‑1. Requirements are also given for four environmental classes covering applications in internal and outdoor locations as specified in EN 50130‑5.
Другие стандарты BS