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Complete plug-and-play kit: hub plus Leak Sensor 4 units, each with a built-in 105 dB audible alarm for instant on-site alerts.
Long-range LoRa: reliable coverage where Wi-Fi struggles (up to 1/4-mile open air); get app, email, and SMS/text alerts and name sensors by location.
Works even without internet: with YoLink Control-D2D, sensors can directly trigger YoLink sirens or shutoff valves for local protection during outages.
Low-maintenance power: each sensor uses 2 AAA batteries with up to 5 years typical battery life; easy replacement.
Scalable IoT platform: one hub supports 300+ YoLink devices; part of a whole smart home/building ecosystem; hub options include standard Hub, SpeakerHub, and Cellular Hub.
13 reviews for YoLink Water Leak Starter Kit: Hub + 2 Leak Sensor 4 (105 dB Siren), LoRa Long-Range, App/SMS/Email Alerts, D2D Offline, 2 AAA Up to 5-Year Battery, Compatible with Alexa/IFTTT/Home Assistant
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Original price was: $45.99.$6.99Current price is: $6.99.

TK –
Simple, reliable, and worth It for the peace of mind
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.
Aaron P. –
Great WiFi leak detection solution
This leak detection kit has saved me thousands of dollars in additional damage. Already catching a laundry room leak and a kitchen leak. I purchased this after a bathroom leak caused major damage and I had to have a way to monitor while away. Great product. Easy setup and very reliable.
Dave –
Solid, Dependable Connection & Long Battery Life
This hub and its devices were very easy to setup (even with a 3 band router). The connections have been solid and constant since the setup over the last year. The original batteries are still going strong. The application is easy to use, shows both the Wi-Fi signal strength & battery levels and has good alerts. There are several other devices that can be linked to the hub.
Laird –
Great leak detector system so far. Will update after some time
Only had it for a few days but so far it seems excellent. Onboarding the Hub and Sensors was very easy. I was very pleased with the fact that it integrated with Alexa without much trouble. I have tested each of the sensors and they work perfectly.
Chzhd325 –
EZ Set-up, Reliable Alerts, Alexa Integration
I installed the YoLink Hub and Water Leak Sensors throughout my home, and the setup was impressively straightforward. The instructions were clear, pairing the sensors with the hub took just minutes, and everything worked right out of the box.The long-range LoRa technology is a game-changer — I placed sensors in my basement and garage with no connectivity issues. I also linked the system to Amazon Alexa, so I now get voice alerts if a leak is detected, which adds an extra layer of protection.The sensors are compact, battery-powered, and easy to tuck behind toilets, under sinks, or near the water heater. I appreciate the app notifications and the ability to name each sensor by location. It’s a smart, reliable system that gives me peace of mind.Highly recommended for anyone serious about water damage prevention — especially in larger homes or areas with weak Wi-Fi.
betzjo –
SAVED DAMAGING MY HOME & SAVED ME MONEY!!!
I purchased multiple components for this YoLink system for my new-to-me home.I have the base unit (actually a couple because I bought so many sets) and temperature sensors for my fridge & both freezers, and seven water leak sensors. (Two bathroom sinks, kitchen sink, under both toilets, under my washer hook ups, and in the drip pan for my water heater.)Well, since I installed them in December 2024, the sensors have alerted me to multiple leaks (multiple kitchen sink leaks for different reasons, master bath toilet supply line, master bath sink).I’ve been alerted several times to different fridge and freezer alerts (door left ajar and freezer was defrosting so I could’ve lost all my meat, fridge temp went too high and food was at risk). More than once I got these alerts.I get alerts sent to my phone as a text, an email, and the base unit has an audible alarm and the text is read out to tell me what the alarm is for.I cannot recommend these systems and components more highly!!! I’ve saved so much money, hassle and time by having these installed.Installation is SIMPLE and the directions are well written.I had all the sensors up and running in literally under an hour, from unboxing to all ten sensors connected and alerts configured.This app is well laid out and easy to manage.I have not yet run into where I would need to pay for the service. I’m using just the “free” allotment of alerts.If need be, I wouldn’t hesitate to pay for the service because this has PAID FOR ITSELF many times over.Please save yourself money, headaches, and give yourself peace of mind.If you have a property where you leave it vacant for periods of time (vacation rental or seasonal property) YOU NEED THESE!!Heck, I live here and it’s saved my bacon time and again (pardon the pun).
Matthew P Mehus –
Affordable, easy to setup, works like a charm
Great product. Simple to setup, the prongs are sensitive enough even for damp water. And they don’t stand out at all when you place them. We go on extended camping trips and these give us peace of mind our house is in good hands. I’ve recommended to many others already.
H K –
Perfect Leak Sensor
I have been using the YoLink Smart Leak Sensor for over six months now, and I can confidently say this product is absolutely amazing. It’s an essential device for any homeowner looking for real peace of mind.The setup process was incredibly easy and straightforward—it took just minutes to get the sensor placed and connected to the hub.The feature that truly sets this sensor apart is the notification system. The alerts are not just fast, they are truly instant and timely. Knowing that I will be alerted the second a leak occurs is invaluable. Furthermore, the sensitivity is very accurate; it detects even the smallest amount of water without giving false alarms. And the alarm is loud and clear.
Susana Herner Reiss –
Buen invento
Craig Walton –
Notifications are excellent and very accurate when detecting water
awk –
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.
Patty –
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.
Dean –
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.