Zoeller 10-4011 APak Indoor Alarm

Standard APak® features: Longer battery life Friendlier design More compact and easy to install CSA approved High water LED and alarm Low battery LED and alarm Silence/Reset button 87 decibel alarm AC only mode, DC only mode, AC/DC mode Long battery life (requires 2 AA, not included) Up to 2 years in AC/DC mode, up to 1 year in DC only mode Power supply with 6' (2 m) cord included Comes with reed sensor