Features: Lightweight, thin and small, easy to install anywhere. ● Detects water leakage using the electrode on the bottom of the case (main body sensor part and 2 point sensor parts) and notifies you with sound notifications and flashing indicator light. Since it is battery operated and does not require any wiring, you can simply place it on the floor or anywhere you want to use. The sensor body and the included point sensor can detect water leakage, so you can monitor water leakage in both separate locations from the main unit. (Length between main unit and point sensors: 12.8 ft (3.5 m); Place the point sensor part in a shielding section (inside the ceiling, under the floor, etc.), and you can install the main unit in places that are easy to maintain (battery replacement, etc.) (near the inspection port or on the floor). ● Waterproof construction means it will not break even if submerged in water. ● Includes height adjustment screws for stable installation according to the location of the installation. Please note that water cannot be detected with very little impurities such as pure and super pure water.