DIY guideLeak detectors

Test the water leak detectors and the automatic shut-off

Wet each sensor so it sounds, change its battery, and check that an automatic shut-off valve really closes the water.

7 steps

Tap a step to watch it again.

Check by the water heater, the washer, the dishwasher, under the sinks and by the sump pit. Note where each one sits.
Dab a wet paper towel across the metal contacts under the sensor. It should sound, and a smart one sends an alert to your phone.
Wipe the contacts dry and press its button to quiet it. Set it back flat, contacts down.
Open its cover, put in a fresh battery of the same kind, then wet it again to check it sounds.
Have one? Wet the sensor that controls it. The valve on the main should turn closed by itself, and a tap you open should stop.
Dry the sensor, then open the valve with its button or app. Check that a tap runs normally.
A sensor that stays silent with a fresh battery needs replacing. A shut-off that won't close or open: ask Handyman for a plumber.

Handyman says: It didn't close? I'll find a plumber.

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