When a leak or water flood is detected, a 24/7 365-day automatic leak alarm is triggered, and low-cost, simple and effective equipment prevents property damage, money loss, and health risks. Fully automatic operation, no wiring required; battery powered (without battery) High sensitivity: There are two touches of water on the bottom, the alarm immediately sound an alarm, up to 110 decibels, the whole house can hear 110 decibels, and the flash flashes at the same time. The water leakage automatic sound and light alarm capacity is large, and the application is convenient and efficient. It is a type of product with high performance, low cost, small size and good applicability. It is widely used in boilers, ceilings, basements, bathrooms, near water towers, kettles, steam generators, washing machines, etc. Detachable design, convenient and practical: It has waterproof function. If the water level is higher than the detector, it automatically hang in the water. Fully waterproof design, sealed and filled inside Power Supply: 9V6F22 square battery (Not included batteries) Color: Gray Material: plastic Package Contents: 3 * Water Leak Detector Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.