Sonin Water Alarm w/ Remote Sensors protect your home or business from costly water flood damage by placing anywhere a potential water leak exists - near or beneath sump pumps, plumbing, refrigerators, dishwashers, washing machines, sinks, water heaters, toilets, basements and garages. For leak detection: Just place the Sonin Water Leak Alarm with Remote Sensor at the lowest point of the floor or other horizontal surface where water collects. The adhesive tape makes it easy to apply sensor to any smooth vertical surface and the alarm will sound if water bridges between the two contacts. The alarm can be table, shelf, or wall mounted away from the sensor. The Sonin Water Alarm w/ Remote Sensor is also good for unattended filling of bathtubs, pools, spas, etc: Sensor has suction cup and adhesive; use either to attach the sensor to any vertical surface. The buzzer on the Sonin Water Damage Alarm with Remote Sensor will sound when the water reaches both metal contacts on the sensor.