Thumb Score: +27 Limited-time deal: YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant $54.99 sale price has a 30% off coupon. You can clip to get it down to $38.49 before tax. I have a bunch of these and I have the wireless water shut off valve installed and it is pretty great.