YoLink Water Leak Sensor 1
YoLink Water Leak Sensor 1, YS7903 | Leak Alerts via Mobile App, Email and SMS, Up to 5-Year Battery Life, LoRa YoLink Protocol Up to 2034 Feet, Hub Required
$15.29 List price: $19.99 24% off
Limited time deal Ends Nov 19, 2026, 7:59 AM UTC
Price as of Nov 15, 2026, 2:58 PM UTC (details)
Our last price check is more than a day old. See the current price on Amazon.
View at AmazonSold by Yosmart
Highlights from the listing
- Catch leaks at home or away: Includes 1 Water Leak Sensor 1 unit; YoLink hub sold separately. Get app, email and SMS alerts through a powered, online YoLink hub (SMS limits apply). Name each sensor by room so you know where to check. Sensors are silent, with no built-in siren.
- LoRa coverage up to 2034 feet: Built on Semtech LoRa technology, sensors communicate with the hub using a low-power radio link. Monitor basements, laundry rooms and other indoor leak-prone areas across large properties. Up to 2034 feet (620 meters) in open air; walls, metal and placement affect actual range.
- Add automatic shutoff, even during outages: Control-D2D lets a sensor directly trigger multiple compatible YoLink shutoff devices, including EVO, Bulldog, motorized valves and FlowSmart ultrasonic meter/shutoff systems. Once paired, local control works without internet or hub power while sensors and shutoff devices remain powered and in range. Choose battery-powered shutoff options for operation during AC outages. Shutoff hardware sold separately.
- Up to 5 years of battery life: Each sensor includes 2 installed, replaceable AAA batteries for fewer battery changes under sinks and behind appliances. Low-power LoRa helps reduce maintenance. Battery life varies with usage, activity and temperature; check battery status in the app.
- Plug, scan and place: Use an existing YoLink hub, or add one for app features. Scan device QR codes in the YoLink app and place sensors near sinks, water heaters or washing machines. Top and bottom probes detect drips and pooling water. IP68-rated sensor housing; indoor use only and avoid continuous submersion. No sensor wiring or individual Wi-Fi pairing required.
- One hub for your growing smart home: A YoLink hub supports 300+ YoLink devices. Choose from 100+ products, including leak sensors, shutoff controls, door and motion sensors, smoke detectors and lighting controls. Manage compatible devices in one app; additional devices sold separately. Designed in the USA, with YoLink customer support for setup, troubleshooting and expansion.
From the product's Amazon listing. We haven't tested this product.
