I bought this product for the detection of water leaks in inaccessible places. In general, when we realize the damage starting to be annoying (paint blistered ...) This product is perfect, there are 3 points to the base that detect the presence of water. I put in a small pan, under the assumed vanishing point. The test with tap water is successful, the alarm signal is strong enough. The battery is supplied with the detector. Considering the price, I bought 3 detectors to disseminate everywhere the risk points.
