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New Release
LeakStop 1
Smart Ultrasonic Water Meter
The only solution designed to automatically stop running water in home, office, or apartment toilets and sinks. Equipped with auto shutoff valve, prevents water waste, real-time monitoring, LoRa range.


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Customer Reviews
Why people love our products
"Scan qr code, and bind. Can't make setup any. Easier!!! Many components to the ecosystem. Works hand in hand with sensors, for doors, temp. Humidity, motion, water leaks, etc. So versatile of ecosystem, reliability beyond any other! No specialized batteries in all units. They seem to have thought of everything!! Would give all products 6 stars if I could!
- John B.
"Literally saved by thousands of dollars when it notified us of a sewer backup in our basement."
- Donald M.
"These are my only smart home devices that out of all, always work. There have never been any issues. No connectivity issues, no update issues, no battery issues. If you use smart home devices, you know how annoying they can be. YoLink just works, all the time. It’s amazing"
- Marsiv
"I ordered the hub, key fog, motion detectors, moisture detectors and sirens.
Great products! Easy to install, the app is well thought out and flexible and the range is unbelievable. As an AV integrator I've used a LOT of different "smart" products.
These are probably the best I've ever had the pleasure of installing."
- Fred F.
"These devices are brilliant. They are (by far) the least expensive brand of home automation products, have a MUCH longer range than all others, and simply work perfect - all of the time.
- Rick Z.
"Saved my freezer multiple times in the last six months. I'm absolutely thrilled with this product".
- S. Reesx
"Yolink products are the best. I never thought I would buy into a Hub system but that is exactly what makes this product work so well. Device to device paring is what makes there family of devices work so well even without internet or wifi access. Very accurate with nice graphical data in the app to monitor trends"
- Richard
Featured In
- Wired
- This Old House
- Best Reviews
- TurboFuture
Best for Large Properties Water Sensor
“From the simple setup to the swift and reliable alerts, YoLink’s water leak sensors impressed.”

Best Whole-House System
“The system is Bluetooth-compatible with iOS and Android, syncs with IFTTT, and works with smart home arrays like Amazon Alexa, Apple Homekit, and Google Assistant.”

Top Pick Best Smart Security Systemes
“Comprehensive set of door and window sensors at an affordable price.”

“[YoLink] utilizes a low radio frequency protocol (LoRa) to communicate. LoRa signals can penetrate greater distances than WiFi, and this system reduces the associated workload of routers. Every sensor I tested was of good quality”

Why is YoLink the Smart Choice?

Simple, Quick DIY Installation

Most Products Two Year Warranty

Hassle-Free Returns, Free U.S. Shipping for Orders $50+

Lifetime Support, U.S. Phone Support Available
Let customers speak for us
from 1387 reviewsThe FlexFob is a useful addition to your YoLink system. But, I wish the YoLink folks would expand their 'handheld remote' offering - As a true fob, the FlexFob is really a bit large to be carried around with keys, which is what I envision when I see the word 'fob'. IOW, too big for a pocket.
As much as I like AAA cells, they're too large for a product in the 'fob' category. IF there really is a need for a pocketable 'fob' device, it ought to be powered from a 'coin' cell, as much as I dislike these types of batteries.
But I really wish there was a device designed to live on a table top, dresser, nightstand, etc. The existing FlexFob fails in this application because it has a rounded back, and isn't very stable when set on a surface, being designed for handheld usage. Same goes for the old YS3603 - it was really designed for handheld use - its buttons are too small for a 'tabletop' application.
Getting even fussier... I prefer hard surface buttons (like the pairing button on the YoLink plugs) over mushy rubber/silicone buttons.
So, if a 'fob' needs to esist, make it smaller and coin-cell powered. Put hardbuttons on it. Then take the old YS3603 product - keep the 2xAAA cells but give it a design intended for stationary (rather than handheld) use. Maybe drop a few buttons, but make them bigger, Add hub-based features (which it now lacks) but don't ever do away with the D2D ability present in all YoLink products. Also, consider the possibility that this re-designed YS3603 device might be able to be fited with a Decora faceplate for wall-mounted applications.
All that said, I love the YoLink products - their RF and battery performance is best in class - nothing comes close

Works great! Sends notifications to my phone when triggered. My second one.

The sensor records the temperature and humidity change in my house and it is sensitive. I can see the cycles of the temperature changes by the triggering of the heater, indicating that it senses the environmental change well.

Door Sensor, Indoor Door & Window Sensor, Hub Required

Valve Controller 2 & Bulldog Valve Robot

X3 Valve Controller, Bulldog Valve Robot, 4 Leak Sensors, Hub Starter Kit

Love the valve. Makes everything so much easier. Even my wife can use it.

I love this system because of how easy it is to set up and the remote access to it.

works great . I would like to see a option that would allow to base the timer on the sunset and sunrise. like to have a light turn on a 1/2 hour a after sunset etc.

Set them up, tested them, and they are cool ! Responsive too ! Pleased

Works flawlessly.
I now have 4 of these.

I’ve used and recommended YoLink for years.
During that period there have been multiple requests for support. From Initial setup to premature failures.
YoLink support has always been very prompt to respond and resolved the issue.
Amazing products, price, and support!
Thanks YoLink - keep up the good work.
Works exactly as advertised. Good Product!
