Water Screamer 9-Volt Water Alarm 130 dB by GizmodeCompared to other products by Gizmode, the Water Screamer WA03 is by far the loudest. It sounds an alarm at around 130 dB which can be heard around the house. When pipes leak or water using machines give way and flood, the water screamer will detect even the smallest amount of moisture, before mold, mildew or serious damage can occur. It can be placed next to bath tubs, under sinks, toilets or it can be used as a flood detector in basements to notify