REVIEW:How A Leak Alert Works Place a Leak Alert wherever you could experience a potential leak or flood. If the Leak Alert"s contacts get wet, it will sound a loud alarm for up to 72 hours. As with your smoke detectors, the battery should be changed on an annual basis. The unit will beep if the battery is running low.Prevent serious water damage in your home with the help of Leak Alert. This self-contained battery-powered unit will sound a loud alarm the second it gets wet, alerting you to a potential water leak.Place it Anywhere the Potential for Flooding or Leaking Exists:Under sinksNear water heaterIn basementsNear dishwashers and refrigeratorsUnder fish tanksNear plumbing and toilets The Leak Alert sounds a loud alarm when it gets wet, so you can stop leaks before they cause serious damage to your home.SEE HOW A LEAK ALERT IS USED Leak Alert at a Glance:Loud alarm (95 dB) sounds for up to 72 hoursIn the event of a flood, unit will float and continue to sound alarm until battery is depletedFully automatic operation--no wiring requiredLow battery indicator for optimum safety and performanceCommon Places to Put a Leak Alert Toilets Washing Machines Water Heaters Sump Pumps