Topvico Water Leak Alarm for Basements, Heater Leak Detector, Sump Pump Overflow Sensor, 120dB Battery-Operated Flood Alarm, 1-Pack

I bought these water alarms for a rental home. I was able to place a unit under both sinks and in the hot water heater pan. The lengthy wire on the sensor allowed me to position the battery case at a distance from the sensor near the front of the vanity cabinet and heater unit so it is easily accessible to anyone to turn on and off and to change the batteries. It is also off the bottom so it will not be exposed to any water if there is a leak. Only the sensor would be exposed to water. That is the advantage of this design. All the units tested fine and the alarm sound is loud which is important. I'm glad I purchased these because there have been issues in the past. I plan to purchase additional alarms for the main house. They give a great sense of relief.

I liked the ease of use. 9 volt battery is all that I needed. All 3 provided are placed in areas that I needed, under sink, at wayer heater and on basement wall. So easy!