This product is widely used at potential flood points, near bathroom, basement, kitchen, boat, garage, etc. Products with confidence, no operation is required, just install the battery, put the product in the place to test. Just put it in the place where you want to check for leaks, it will automatically detect leaks and will alert you as soon as the three contactors come into contact with water. Easy to use No button, no programming, you can use it for purchase at home. Made of ABS resin high quality, this leak alarm is sturdy and environmentally friendly. Low consumption Helps you detect water leaks in your home, which also contributes to energy saving and environmental protection. Flood damage is one of the most common and costly problems for families. Even a small amount of water can cause serious problems for your family. a small leak is detected, the leak alert sounds so loud that it indicates a problem that needs immediate attention before it becomes a costly problem. Features: Place the Leak Alarm in any potential flood spot - next to bathrooms, bases, kitchens, boats, garages or etc. When the Leak Alarm detects even a small water leak, it sounds a very loud alarm and lets you know that you have a problem that needs your immediate attention. Automatic operation. Once its three contactors touch water, it will sound immediately with 110dB loud alarm; No buttons, no programming, just place it where you want to check water leakage; Requires a 9-volt alkaline battery(not included)and normally a new battery can last for 1 year; Use by water heater, sink cabinet, sump pump, washing machine, radiators and more; Made of durable ABS Plastics. It is specially designed to float in flood circumstances. 1. Place the induction plate flat under the angle valve and the leaking pipe. When the water leaks, the water will contact the induction plate to trigger an alarm; 2. If the bottom of the kitchen cabinet is metal, put a piece of paper under the induction leaf / lay the induction leaf flat is fine White color Number of pieces sold: 1 piece Size: 9.8 x 4.6 x 2.2 cm.