Search  for anything...

YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant

  • Based on 4,529 reviews
Condition: New
Checking for product changes

Buy Now, Pay Later


As low as $11.67 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: Only 1 left in stock, order soon!
Fulfilled by Amazon

Arrives Tuesday, Feb 25
Order within 2 hours and 15 minutes
Available payment plans shown during checkout

Style: 0 dB 4 Sensors


Features

  • "SMART WATER STARTER KIT" YoLink Hub Leak Detection Starter Kit, including one hub and quantity four Water Leak Sensor 1. Hub supports ethernet and/or WiFi (2.4GHz, only). Connect to your router's ethernet port for our "Plug, Plug & Play" easiest set-up - be up and running in just minutes!
  • SET IT & FORGET IT! Installs in seconds! The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor. Suggested uses are near or under, toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks, in or near sump pumps, and by any other location subject to water leaks and flooding.
  • Note: This product requires a YoLink Hub to connect to the internet and work with the YoLink app. It does not connect directly to WiFi or local networks.
  • EXTREME LONG RANGE! Powered by LoRa technology, the long-range yet low-power system offers the industrys longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property.
  • UNLOCK YOUR SMART HOME! The YoLink Hub can support more than 300 devices and is compatible with the entire line of YoLink smart products, including security, environmental, power & lighting, smart locks, and cameras (coming soon!).

Color: White


Brand: YoLink


Power Source: Battery Powered


Compatible Devices: Desktop


Product Dimensions: 4.33"L x 4.33"W x 1.06"H


Battery Description: ‎AAA


Number of Batteries: ‎8 AAA batteries required. (included)


Voltage: ‎3 Volts


Control Method: ‎App


Mounting Type: ‎Floor Mount


Maximum Range: ‎1.32E+3 Feet


Sensor Technology: ‎Contact Sensor


UPC: ‎850024791565


Manufacturer: ‎YoSmart


Part Number: ‎YS1603+4YS7903


Item Weight: ‎1.34 pounds


Product Dimensions: ‎8 x 2 x 4 inches


Country of Origin: ‎China


Item model number: ‎YS1603+4YS7903


Batteries: ‎8 AAA batteries required. (included)


Included Components: ‎Batteries


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Description Pile: ‎AAA


Date First Available: February 29, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Feb 25

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Excellent device and worth the money.
Style: 0 dB 4 Sensors
I recently installed the YoLink Home Water Leak Monitor, and I couldn't be happier with my decision. This device is incredibly easy to set up and connects seamlessly to my smartphone. The real-time alerts are a game-changer, notifying me instantly if any leaks are detected. The build quality is solid, and it’s compact enough to fit in tight spaces. I love that I can monitor my home even when I'm away, which gives me great peace of mind. Overall, this is a must-have for anyone looking to protect their home from water damage. Highly recommend! ... show more
Reviewed in the United States on January 25, 2025 by Arun Kandasamy

  • YoLInk is great!
Style: 0 dB 4 Sensors
This was my first purchase from YoLink: a bunch of water leak detectors. Since then I added two "auto" garage door closers (if somebody forgets and leaves the door open), a camera, and other stuff. I have been super happy with the setup, operation, and customer support. At the beginning I needed some hand holding. I wrote software for 40 years and want to comment on a couple things. First, YoLink has successfully NOT put in every feature any customer has ever requested. Look at Word or Excel to see a bloated app. YoLink is simple and logical without a bunch of confusing bells and whistles the average user does not need. Second, the software is ROBUST. When something goes wrong - like your power goes out or your wifi fails - the system comes back 'up' reliably. I like it. --jim ... show more
Reviewed in the United States on February 15, 2025 by Jimmy

  • Peace of mind
Style: 105 dB 4 Sensors
We have notoriously bad luck with water incidents at our new home. We had 2 separate occasions where water leaked through the ceiling from an A/C drip pan overflowing. We also had an issue with a slab leak in the kitchen. You would think after those incidents I would've invested in water sensors....but no. It wasn't until I woke up on Christmas morning to my entire house being flooded in 3" of water that made me finally come to my senses and order water leak sensors. For the Xmas incident, the water inlet valve under my kitchen sink came loose overnight and managed to flood the entire house in a matter of 5 hours. Had I had a leak sensor under the sink, Christmas wouldn't have been ruined and my house wouldn't have had thousands of dollars in water damage. So now I have water sensors on anything that has the potential to leak water. All the sinks (kitchen, bathroom, laundry room), all the AC drip pans, the water heater, the toilets, the washer and even the fridge and dishwasher. The Yolink system is incredibly easy to install. It took me about 20 minutes to pair all the sensors with the main hub and do the wet checks on them as well. I recommend labeling each sensor with its location (i.e. kitchen sink) that way you don't get confused on what goes where (if you're pairing a bunch of them). The app works great and you can set up a room, then the sensors that will be in that room. You can also favorite a sensor or sensors so that they show up on your dashboard on the app, allowing you to monitor the sensor for battery life or activity. You can also sign up for email and text notification if a leak is detected. Additionally, these make a very noticeable audible noise that can also be modified for duration and alert intervals. The app also keeps history logs of any incidents that the sensors experienced. Lastly, the range on these is amazing. I haven't had any issues with these being out of range (even in the attic) or going offline. To test each of these, I paired them all then set them on a wet paper towel. They immediately made a high pitched beep and send a corresponding email and text. To test the top sensors, I just used a dropper and put a drop of water on the top which yielded the same results. If you are a homeowner I cannot recommend these enough. In hindsight, I wish I would have installed these everywhere to avoid heartache, stress and thousands spent in repair. ... show more
Reviewed in the United States on January 25, 2024 by Lunachic

  • Easy setup, works as intended.
Style: 105 dB 4 Sensors
Setup was easy and devices work as intended. I recommend testing each sensor after linking and get familiar with. Setting up App takes time and also there is no easy way to understand all the settings. Only time will tell if tgey actually work in case of emergencies. Most valuable feature is SMS when internet is out, but there is no way to get alerts if power is out and there is a leak. ... show more
Reviewed in the United States on December 17, 2024 by clcknclick

  • Awesome - fast set up, works with Alexa, works without internet!
Style: 0 dB 4 Sensors
Review Summary - Awesome I recently purchased the YoLink Hub and Water Sensor pack on Amazon and the YoLink 3/4 motorized water/gas valve shut off from their direct site. All products worked fantastically. I was not thrilled with the idea of yet another hub in my Smart Home but the reviews (and no availability of SmartThings water sensors) led me to try YL and I am so glad I did. I love this brand now: set up was faster than zwave/zigbee, works without internet, and flawless integration with Amazon's Alexa. 5 Stars hands down and another 5 for the future - make sure to follow them on FB. Below are some other things I would like to share. When to buy water sensors - Every time someone shares a wet story A couple of years ago, my cousin's house flooded after his girls filled the sink with water (washing their face like they down in the movies) and then left for school... He had to live at my parent's lake cottage for the winter (~3mo) in upstate NY. Family of 4, dog, and cat in a 2 bedroom ranch with no laundry. At that time, I decided that since their deductible was $500, I was going to spend that much on a solution: a dozen ST water sensors and a Dome bolt-on valve control. Every time I have a water issue, a close call, or hear a story about someone who had an issue - I buy a few more. The latest was a co-worker whose parents went to Florida for the winter. Apparently, a bird died in their HVAC exhaust pipe, slide down, and errored out the furnace (CO2 protection feature). Since they had no smart devices to warn them about the cold house, the pipes burst and no one knew. When they came back 3 weeks later... eww. That's when I found and joined the YoLink system! Use Cases - Start low in each room I am not a plumber or insurance claims agent: these are just my thoughts that work with my house. I first started out with 1 water sensor in each bathroom. I put them by the toilet with the thought that if a sink also had an issue, at some point it would make it out of the cabinet and onto the floor and get to the sensor. It won't help with small leaks that will just go through the cabinet and into the floor/ceiling etc, but it's a start since water damage can happen almost anywhere. You can always go back and add another to each room (see above "when to buy"). I had an issue where my hard water was leaving sediment in my washing machine's solenoid causing it to stay in the open position. We came home to a door-open front-end machine almost ready to spill over. Now we have a sensor in the laundry room. We had high water pressure in our house which was causing our on-demand tankless heater pressure relief valve to started to let out a steady stream. We had a sensor there to cut off the water and save the day. I now have a pressure regulator (WATTS) and water e-treat (WATTS) system! Speaking of which, not that I don't trust my plumbing work - but the areas I was working with, I put a kids snow sled under my work when I was done to collect any water and put a sensor in it. No leaks BTW! Speaking of the sled to collect water - I use decorative square planters to put my bedroom and living room humidifiers in during the Winter with a water bud in each. Last winter, the side of one of the humidifiers broke and messed up my living room hardwood floors. I use a shoe/boot tray for the cat's water fountain and a sensor just in case they knock it over. I actually do the same with my hot-water tank too - ensures it will hit the senor and buys a few minutes between the valve shutting, water leaving the system (pipes above), and someone to get there. Last Thoughts I am excited to build on the YoLink system, I plan on picking up an alarm and some of their other unique products coming out - smoke alarm, CO2 alarm, outdoor alarm, outdoor motion sensor, outdoor contact sensor, etc. Pretty exciting stuff. BTW, I was not paid in any way for this review, and I am not new to the smart home space - I use everything in my house Tuya, ST, LIFX, Hue (which sucks - Paul Hibbert is correct on that) so I am not just blown away with the novelty of this, I think its a great brand that has a lot of potential with the LoRa. ... show more
Reviewed in the United States on March 29, 2021 by Bob Pagano 3 Bob Pagano 3

Can't find a product?

Find it on Amazon first, then paste the link below.