Please refer to the RS website for FIA Guidance on Visual Alarm Devices (VAD) regarding the conflict between BS 5839 and EN 54-23. Sounder / Beacon - VSO-LED Series. Suitable for use in factories, machine rooms, workshops and areas where sounders alone may not be sufficient to raise an alarm 1 flash per second Can be used with or without a detector Locking cover plate is available if a detector is not being used (see stock number ; 669-5382 669-5382 ) More information:  | | Accessory Type: | Cover Plate | For Use With: | VSO Sounder Beacons |
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