I am looking for a water leak sensor that will turn off the power to a 110V 15A appliance when a leak is detected.
Try these from and episode of Ask This Old House
Manufacturer: Zircon Corp.
1580 Dell Ave
Campbell, CA 95008
Electronic water main shut-off
Manufacturer: WaterCop/DynaQuip Controls
10 Harris Industrial Park
St. Clair, MO 63077
Electronic water heater shut-off, electronic washing machine shut-off, and flood prevention supply hoses.
Manufacturer: Watts Regulator Company
815 Chestnut Street
North Andover, MA 01845