X-Sense 3-Pack Wi-Fi Water Leak Detector

This water leak detector features high sensitivity with two top and four bottom sensor probes detecting water levels as low as 0.015 inches. It emits a 110 dB alarm from both the sensor and base station when triggered. It is IP66 waterproof, suitable for humid areas, and has a durable, rust-proof exterior. The price drops from $49.99 to $39.99 with free shipping.