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The ECC-50BDA is an intelligent amplifier that can be configured for 50 watts or 100 watts of total audio power. It is used with the ECC-50/100(E) Emergency Voice Evacuation System to amplify an audio message for distribution in a facility when supplemental power is required. , It provides 50 watts or 100 watts of primary power along with 50 watts of backup power and comes standard with eight built-in fully supervised speaker circuits/zones. It can be conveniently installed near a protection area to reduce wiring demands for the speaker circuit.