BS-531/1/MAR is a conventional siren unit, that has a sound indicator and a beacon. It cooperates with all conventional fire detection panels and it can be connected in the output of all addressable fire detection panels. The conventional siren has the capability to choose from 8 different tones and two frequency rates. The maximum sound level is 94 dB at 1m. The appropriate place for mounting is about 2-3 meters above the floor.
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