Dual power source uses both chassis and battery power. Provides visual and audible alarm when unsafe levels of LP or CO are present. Flush mount. 4 ½" x 4 ½" x ½" faceplate. Requires 3 ½" x 3 ½" wall opening. Includes mounting screws. 12-volt.
Protects you by sensing both liquid propane and carbon monoxide gas.
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