WER’s Water Leak Alarm Sensor is a straightforward, no-frills sentinel for your home’s vulnerable spots. It’s a simple, battery-powered device with a single job: to scream at the first sign of water. At 90 decibels, that scream is impossible to ignore, whether you’re in the next room or upstairs.

The design is minimal and practical. Each unit is a small, lightweight disc that tucks under a sink, behind a washing machine, or next to a water heater. It operates on a single 9V battery, which you’ll need to supply yourself. There are no smart features or app connections here—just two metal probes on the bottom that, when bridged by moisture, trigger a piercing, continuous alarm. It’s a purely physical, reactive form of protection.

For peace of mind in flood-prone areas like a basement utility room or a vacation home, this simplicity is a virtue. You place it and forget it until it’s needed. Just remember to check the battery periodically, as a dead sensor offers no protection at all.