Fibaro FGFS-101 ZW5 FGFS101ZW5 Flood Sensor, Z-Wave Plus Water Leak Detector-FGFS-101, Price:  $47.98 (as of 04/08/2023 12:15 PST- Details)

The ultimate Z-Wave Plus water leak sensor/detector, with temperature and tilt sensor
Get alerted on your smartphone/tablet/email, trigger certain lights, activate specific scenes, or even sound an alarm when water is detected
Three 24K plated Gold telescopic feet always makes contacts with both even and uneven surfaces and never corrodes