ALSD1 SKU ALSD1-474 The ALSD1 are high output, very low current draw, dual channel siren drivers. They are designed to work with alarm panels with limited current capability. Please log in to see price or purchase this item Request an account Line Comment Special Price Features:Two (2) channel operation - steady or yelp.Very low current draw.Parallel or series speaker wiring113 db @ 10' @ 6 Volts - 8 Ohms115 db @ 10' @ 6 Volts - 4 Ohms116 db @ 10' @ 12 Volts - 8 Ohms120 db @ 10' @ 12 Volts - 4 Ohms