Water leak alarm 1.Low battery alarm 2.Loud alarm 85dB at 10feet 3.Water resistant 4.Place anywhere water leak alarm Water leak alarm PW-312 is designed to protect your home from potential water flood damage by placing anywhere a potential water leak exists -- near or beneath sump pumps, plumbing, refrigerators, dishwashers, washing machines, sinks, water heaters, toilets, basements and garages. Water overflow alarm features: 1. Ergonomic design of detector casing 2. Fully automatic operation. 3. Easy installation and maintenance. 4. Alarm signal is able to last for up to 72 hours. 5. Using advanced electronic design to accurately detect the water leakage. 6. Sounding a loud alarm signal of exceeding 85 dB at 10 feet at alarm mode. Water overflow alarm specifications: 1.Water Resistance: Splash and water resistant, but not waterproof.Floats on surface. 2.Shock Resistance:Shock resistant from a 6-ft. (1.8 m) drop onto concrete 3.Humidity:80%RH (non-condensing) 4.Operating Temperature:32oFto 120oF (0oC to 49 oC) 5.Sound Intensity:85dB at 10 feet (3.0 m) 6.Battery Life:72 hours of continuous use (Up to two years depending on use) 7.Battery Type:9 Volt alkaline (not included) 8.Weight: 2.4 oz. (68 g) without battery 9.Dimensions:104.5mm x 68mm x 29.5mm 10.Relay output optional. PACKING:Each product with manual and mounting hardwares into a gift box:10.5*7*3.5cm,then 100 boxes into a carton:38*37*23cm, 16/17kgs.