

🚨 Stay dry, stay connected—without the WiFi drama!
The YoLink 1/4 Mile Super Long Range Wireless Leak Sensor uses industrial-grade LoRa technology to provide reliable water leak detection up to 400 meters away without relying on WiFi or internet. Featuring encrypted device-to-device communication, easy surface mounting, and a 5+ year battery life, it ensures continuous, secure monitoring for your home or business. Requires a YoLink Hub for full app functionality and alert notifications.
| ASIN | B07Z7QWJBP |
| ASIN | B07Z7QWJBP |
| Batteries | 2 AAA batteries required. (included) |
| Batteries | 2 AAA batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Alkaline |
| Battery description | Alkaline |
| Best Sellers Rank | #107,315 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #196 in Motion Detectors |
| Color | White |
| Control method | App, Voice |
| Coverage | 1000 Feet (Open Air) |
| Customer Reviews | 4.7 4.7 out of 5 stars (820) |
| Customer reviews | 4.7 4.7 out of 5 stars (820) |
| Date First Available | 6 November 2019 |
| Date First Available | 6 November 2019 |
| Included components | Valve Controller |
| Installation Method | Surface-Mounted |
| Item Package Quantity | 1 |
| Item Weight | 80 g |
| Item model number | YS7903 |
| Item model number | YS7903 |
| Manufacturer | YoLink |
| Manufacturer | YoLink |
| Material | Plastic |
| Maximum range | 400 Meters |
| Mounting type | Protruding |
| Number of batteries | 2 AAA batteries required. (included) |
| Part number | YS7903 |
| Product Dimensions | 6.1 x 6.1 x 2.2 cm; 80 g |
| Product Dimensions | 6.1 x 6.1 x 2.2 cm; 80 g |
| Sensor technology | LoRa |
| Special Features | Easy to Install |
| Specific uses | Amateur, Inside, Professional, indoor use only |
| Speed Rating | long range smart home automation |
| Style | 0dB, without hub |
| Switch Style | Temperature Switch |
| Temperature Range | 32-122 Degrees Fahrenheit |
| UPC | 850024791480 750258361438 |
| Voltage | 3 Volts |
| tech_spec_battery_description_toys | Alkaline |
C**N
Works very well and detects water, notifications are excellent
J**Y
This device, like the other ones in the YoLink family, is exceptionally easy to put into service and well-built which gives me confidence in its reliability. I've stationed these water sensors all over the house now, having bought a bunch more. I've rigged it so that sensing a water condition (drip, spill, flood, etc.) will sound an alarm in my home office, notify me and my wife on our cell phones (by way of the app), and send me an SMS text message. I plan to get YoLink's 110dB alarm unit too, but haven't yet. Every once in a while, I test the alarm system by putting a random sensor (say, the one under the kids' bathroom sink) in a small puddle on the countertop just to reassure me that all is still operational. I really like this system! Also, the door sensors are great because it helps me keep tabs on who's filching the junk food from the basement pantry! (I pretend the door sensor is there to ensure we close the insulated door...)
P**L
This is the eu version that operates on a different frequency to the us hubs. It does not connect to my hub
M**E
This is the 6th sensor I buy plus the hub and a couple of plugs . This is a fantastic little device with excellent connection to hub, push notifications that do not fail . I have had to use only one as I had a leak from the sink and was notified on the second . Super easy to install or add . One of the best purchase I had done on Amazon !!
M**L
Great if you need to be away and leave water on
Trustpilot
2 months ago
3 weeks ago