A loud alarm (120dB) sounds if only the slightest amount of moisture is detected. In flood situations, the water sensor is designed to float and sound the SOS alarm until you dry the probe or the battery runs out. Low battery alarm: the water sensor alarm beeps and flashes red when the battery is below 5%, or press the button to test the battery level. Wireless and easy to use: no cable or configuration required. With its mini size, you can place it in any place where water can escape. Like in a basement, bathroom, kitchen or anywhere there is a risk of leaks. Second mute mode: press the button to mute the sound when you find the leaks and dry the probe. Sensitive Dripping and Leakage Alarm: In addition to 2 groups of back water detection probes, each water alarm detector also has a group of front probes to drip pipes. Advanced design lets you predict early water leaks. Prevent the occurrence of floods.