AUTOMATIC OPERATION & HIGH SENSITIVITY: You just need to put the water sensor alarm where you want to check for leaks. The water sensor plugged will automatically help you detect leaks, and once the three contactors touch the water, the hot water sensor will immediately alert you. The water alarm musical is easy to operate. No buttons, no programming, you can use it when you buy it home HIGH QULITY MATERIAL: The bathroom bath water alarm is made of high quality ABS plastic, this leak alarm is rugged and environmentally friendly. The running bath alarm is low consumption and helping you to detect the water leakage in your home, it also contributes to energy conservation and environmental protection. You will not regret it when you buy it A GOOD HELPER IN LIFE: Water damage is one of the most common and expensive problems affecting families. Even a small amount of water can cause serious problem to your family. When detecting even a small leak, the water leakage alarm sounds very loud and lets you know that you have a problem that requires immediate attention before it becomes an expensive problem 9V ALKALINE BATTERY:This bath full alarm requires a 9V alkaline battery, but we do not have a battery when shipped, need to be purchased by a dear foreign friend, this battery of the rain alarm for washing can usually be used for 1 year, you need to change the battery after 1 year. Make sure the water pipe detector works efficiently APPLICABLE AREA:This water detector alarm is widely used in any potential flood point - close to bathrooms, basements, kitchens, boats, garages, etc. Only if there is a leak in the place where you live or work, you can choose our water detector alarm with confidence