This product is an leakage alarm, made of high-performance ABS material, safe and durable, with excellent texture, and can serve you well. With scientific design and practical functions, you can use the water alarm to detect and notify water that are or leaking before serious water damage occurs. This is a very practical alarm that will hold your backpack to understand the state of water leakage in real time. Features -Color: White. -Material: ABS. -Size: About 7.20X4.55X1.40cm/2.83X1.79X0.55inch. -Working voltage: 3V. -Quiescent currernt: 30ampere. -Emission currernt: 35mA. -Working Environment：0 degree centigrade~50 degree centigrade. -Battery: 2 AAA batteries (not included). -Made of sturdy and durable ABS material, it will not be easily and will serve you well. -The design is reasonable, scientific and practical, and can play a good monitoring and warning effect. -It is versatile, professional and , and can be used in bathrooms, basements, garages, etc. -High energy, low consumption, very durable, and have a . -Able to , you can understand the state of water leakage in real time through your . Package list: 1 leakage sensor