SONOFF Water Leak Detection Cable

I was worried the detection area would shrink with the extra length, but the extended cable picks up leaks just as fast as the sensor on its own. Splicing it into my setup for the under-sink area took two minutes.

The extension cable gives me way more flexibility than the built-in sensor alone, so I can snake it along the baseboard where pipes run. Set it up in about five minutes and it's already given me peace of mind in the laundry room.

I paired this cable with my leak sensor and tucked it behind the washing machine where the hose connects. The narrow-area detection is spot on—it caught a slow drip within minutes of me testing it with a wet paper towel.