YoLink Water Leak Starter Kit: Hub + 4 Leak Sensor 1 (Silent), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline Triggers, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant

Excellent Leak Detection System — Reliable and Easy to Use I purchased the Hub + 4 Leak Sensors to monitor areas in my townhouse that are prone to moisture issues—under the HVAC unit, washer/dryer, refrigerator, and in the basement. After using them, I’m extremely impressed. Here’s what stood out: 👍 Easy Setup The installation was quick and straightforward. Each sensor paired with the hub without any trouble. 📱 Convenient Remote Monitoring The app makes it simple to check all sensors from anywhere, which gives me real peace of mind when I'm not home. 🚨 Accurate Alerts and Great Sound Quality The sensors react immediately to water. I had a real incident where my heating system’s pump failed on a very cold day. The device detected the leak instantly, and the app notification prompted me to call the HVAC technician before the situation worsened. Compact but Powerful The sensors are small enough to fit into tight spaces while still delivering strong performance. Their size makes placement very flexible. Overall, this has been a fantastic investment for protecting my home. Highly recommended for anyone looking for a reliable leak detection system.

I bought this leak starter kit after dealing with a small leak under the sink that turned into a big cleanup job with a new cabinet...lol. I wanted something simple and reliable this time, and so far this system has been exactly that. Setup was super easy. I plugged the hub into my router, opened the app, and it basically did the rest. Each sensor paired with one button press. I had everything installed in maybe 10–15 minutes for entire house. What I like most is that these don’t depend on Wi-Fi. I’ve got one sensor tucked behind a toilet, another under the kitchen sink, and even one in a spot where my Wi-Fi normally dies... and every sensor still connects with no issues. I tested all four sensors with a damp paper towel, and they alerted instantly. I get notifications on my phone and email, which is great for when I’m not home. A big plus for me is the battery life. These use simple AAA batteries, but they’re supposed to last years, not months. And the app actually shows the battery level for each sensor, so you’re not guessing. It’s nice to know you won’t get blindsided by a dead sensor right when you need it. The sensors feel solid and the app is straightforward. Honestly, this setup has already given me more peace of mind than anything else I’ve tried.

This is a great product! RARELY, almost never, do I submit product reviews. However, I purchased the YoLink kit to monitor the home while I am away for an extended period. I received an alert on a water leak to my 2nd floor HVAC unit, and was able to quickly mitigate the issue. I just bought a second kit to monitor a second home. Simple, easy, and effective!

The YoLink Water Leak Starter Kit (Hub + 4 Sensors) is a top-tier choice for reliable, long-range flood protection. Core Benefits Extreme Range: Uses LoRa technology to maintain a connection up to 1/4 mile away, making it perfect for basements or detached garages where Wi-Fi fails. Offline Reliability: Devices can pair directly (Control-D2D), meaning the sensors can trigger a siren or shut-off valve even if your Wi-Fi or internet goes down. Battery Life: Sensors typically last 5+ years on two AAA batteries, significantly outperforming competitors. Easy Setup: Features "Scan & Play" QR code integration via the app for near-instant pairing. Key Features Sensor 4 Upgrades: Includes a built-in 105dB alarm on the sensor itself and a freeze warning alert. Notifications: Supports push alerts, emails, and limited free SMS; integrates well with Alexa, IFTTT, and Home Assistant. Build Quality: Sensors are IP66-rated waterproof, so they continue to function even while submerged.

Great range, far more than a typical household would need. I work in wireless systems engineering so I decided to see how good the range was as well as to quantify the performance of the wireless link. Note that the received RF signal is reported in dBm. The "m" means dB with respect to 1mW. The user interface reports the RX signal levels for each of your sensors. +3 dB is a factor of 2x larger -3dB is is 2x smaller or a factor of 1/2x 6 dB a factor of 4, 5 dB is a factor of 3. 10dB a factor of 10. so 30 dB is factor of 1000 33db is a factor of 2000 or just do the math. FACTOR= 10^(dB/10) A signal of -50dBm is 20dB (100x) stronger than -70dBm. In free space with nothing in the way, every time you double the distance between Hub and sensor, you will see 6 dB (factor of 4) signal drop. Inverse square law. If there is stuff in the way, it will be more than 6 dB signal loss when you double distance. For this device, You need better than -100 dBm for super reliable connection but it will work even down at -115dBm with the odd error (missed report). In my house, it measured better than -40 dBm anywhere. i.e. teh signal was 60 dB stronger than it needed to be. 60 dB is factor of 10^6 (1,000,000) , First test was with hub at one end of house and sensor at other end of house 75 feet away. Worked anywhere in house and out in garage more than 75 feet away. It even worked in a refrigerator 75 feet away but the signal was dropped by 12 dB compared to being outside of the refrigerator. Note that if you seriously want to use it in a refrigerator or freezer , you need to get special batteries (lithium) that work in the cold,. i.e. not alkalines. So to really challenge it, I did a couple more tests leaving the hub indoors. Note that just getting a signal outside the house is a serious challenge because the house is stucco and has chicken wire in the exterior walls that block much of the RF signal. As fyi, cell coverage inside is spotty as well compared to outside. . 1. Out in my yard ~ 100 feet from the house I have an irrigation valve that sometimes does not get shut properly. Great spot for a sensor. This location tested fine. 2. Testing for long range: Left the hub indoors at far end of house and put the sensor on dashboard of my car some 85 feet away and worked fine ~ -65 dBm . 3 Drove ~ 1000 feet down the street and worked fine with the direct path clipping through several (stucco) homes and some foliage. Signal -85 dBm. Rock solid, low latency reporting . 4. AT 1000 feet, drove down a side street ~100 feet distance. So 2 side streets (5 houses and foliage ) between hub and sensor. Signal level at -110 to -115 depending on where the car was. Had noticable missed packets below -110 dBm. So I am super impressed are the range/reliability given the cost. The sensors are really solid (well made). I have not yet tried to set up Alexa to report. Note that if doing leak detection and you have a situation where the leak may appear anywhere around an appliance (water heater) or along a crack or long gap, roll up paper towel long ways 2 or 3 sheets long into ~ 1.5" diameter tube and then flatten to a ~ 6-8 layer strip. i.e. make a mutilayer long strip. Place the sensor in the middle of the strip. If any water gets to any part of the strip, it will creep to the sensor by capillary action and trigger your alarm. Will add the 5th star when I get Alexa working.

Buen invento

Notifications are excellent and very accurate when detecting water

1. The product description states "effortless installation" - placing the units is easy - but configuring the software installation is not. If you are at all phased by IT connectivity - try another system that is more easily installed. 2. This was delivered to the UK from the USA - so it came with a USA 2 pin plug.

I just bought them the hub with 4 sensors and an extra 3 without the hub. They are all connected I used Ethernet connection to wifi on second floor. Hub covers right to main floor and furnace room and main shutoff in basement. I cannot say how long the battery lasts as just purchased. My friend had one and he to,d me 3 years and still hasn't changed battery. No false alarms so far. I'm happy with product. Seems made of good quality.

This is a really good, easy to use system that work terrific. I have them in my home and cabin, both for water leak detection and they have saved me twice from a water leak doing major damage. Besides the leak detection I have a water temperature monitor on my hot tub and a water depth finder at my cabins fresh water tank. I have never had any issues till recently the hub stopped working and was replaced on warranty. Thanks again.