ALSD2 -Std Output Siren Driver Overview: Model ALSD2 is a Standard output very low current draw dual channel siren driver designed to work with alarm panels with limited current capability. Features/Specifications • 6VDC or 12VDC operation. • Parallel or series speaker wiring: - 103 db @ 10 ft. @ 6V - 8 Ohms - 105 db @ 10 ft. @ 6V - 4 Ohms - 106 db @ 10 ft. @ 12V - 8 Ohms - 111 db @ 10 ft. @ 12V - 4 Ohms • Current draw range from .3 amp to 1.22 amp based on speaker resistance and supply voltage. • Two (2) channel operation - steady or yelp. • Very low current draw. • Lifetime Warranty. Board • Dimensions (approximate): 1.75”H x 2.75” W x 1.1” D. ALSD1 Overview: High output very low current draw dual channel siren driver designed to work with alarm panels with limited current capability. Features/Specifications • 6VDC or 12VDC operation. • Parallel or series speaker wiring: - 113 db @ 10ft @ 6 Volts - 8 Ohms - 115 db @ 10ft @ 6 Volts - 4 Ohms - 116 db @ 10ft @ 12 Volts - 8 Ohms - 120 db @ 10ft @ 12 Volts - 4 Ohms • Current draw range from .5 amp to 1.8 amp based on speaker resistance and supply voltage. • Two (2) channel operation - steady or yelp. • Very low current draw. • Lifetime Warranty. Board • Dimensions (approximate): 1.75”H x 2.75” W x 1.1” D.