Flood Buzz is attractive as cheap, distributed protection under many fixtures. It is not a substitute for remote alerts or an automatic shutoff valve when the home may be unattended.
How it works
When water bridges the metal contacts on the bottom of the alarm, the unit emits a loud audible signal. The small model is designed to fit under sinks and appliances where clearance is limited.
The company currently lists an alarm level up to roughly 95 dB and a preinstalled battery intended to last several years.
Where it makes sense
The best use is multiple sensors in places where a slow leak can remain hidden: beneath an RO system, dishwasher, refrigerator line, washing machine, toilet or water heater pan.
Because the device is inexpensive relative to smart shutoff systems, broad coverage can be more practical.
What it cannot do
It cannot send a phone notification and it cannot close the water supply. If nobody can hear the alarm, the leak continues.
For second homes, vacation properties or expensive finished basements, a monitored or automatic-shutoff system can be worth the added cost.