First Alert 1040962 Battery Operated Carbon Monoxide Alarm, 12 Pack BF20 rugged suction/discharge hose which has

rugged suction/discharge hose which has good chemical resistance

range and indoor display has backlight for nighttime viewing

Oil pivot points to maintain smooth

of max torque and 230 ft

First Alert 1040962 Battery Operated Carbon Monoxide Alarm, 12 Pack BF20 rugged suction/discharge hose which hasHighlights: 12 Pack Contractor pack Each unit is powered by one 9v replaceable battery Offering peace of mind even during power outages Includes a permanent internal sensor that lasts up to 5 years An 85 decibel horn sounds if carbon monoxide levels are too high Features a test silence button that silences the alarm Allows you to test its functionality No installation or outlet is required An optional wall mount is included A pull down action chart on