YOLINK Smart Home Starter Kit: Water Sensor 4-Pack & Hub Kit –

Amazon.com Price: $79.99 (as of 04/08/2023 12:15 PST- Details)

Easy to install. Scan, Plug and Play. Full installation and setup in less than 10 minutes
Protected and informed, with Realtime phone app notifications, emails, SMS messages and automations (turn on optional sirens, smart plugs..)
FAIL/SAFE: Patented technology! Pair your leak sensors to battery powered valve controllers and/or sirens. No internet, no WiFi, power outage no worries!