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Internet #315406482

Model #T900-006-B3D

Flo by Moen 1 in. Smart Water Leak Detector with Automatic Water Shutoff Valve, 3pk Water Detector with Battery Backup

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$undefined.00 /mo* suggested payments with months* financingApply Now
  • Residential Water leak Detector automatically shuts off water
  • Get leak alerts, track water use, monitor your home's water 24/7
  • 1 in. smart water shutoff; 3 water detectors & battery backup
  • See More Details

Product Overview

Achieve full control over the technology of your home plumbing with Flo by Moen. Flo is a Smart Home system the first of its kind that allows you to see live water use, including water flow rates, pressure and even temperature from the MOEN mobile app or on the web. The purpose is to monitor and protect your home from leaks and water damage without the need of additional sensors. If there is a burst pipe or someone leaves the water running, the app will alert you to shut the whatever off - no matter where you are. Bring smart plumbing to your home that allows you to detect any plumbing issue remotely.
  • Bundle includes: (1 count) Flo by Moen 1 in. smart water shutoff; (3 count) Flo by Moen smart water detector and battery backup
  • Smart water valve has remote and automatic options to shut off valve help to prevent catastrophic damage
  • Home water leak detector offer 24/7 protection from catastrophic water damage, allowing you to turn your water on/off from the app manually or Flo by MOEN will automatically turn off the water for you to protect the home
  • Daily leak tests using MicroLeak technology that proactively monitors the security of the home's entire water system (including behind walls and in foundations) to identify leaks as small as a drop per minute (e.g. pinhole leaks, etc.)
  • Compatible with Alexa skills, Google assistant and ring; no smart hub or system required; requires Wi-Fi connection; requires standard AC/DC power connection
  • Wi-Fi water leak sensor sends all of your alerts in real-time through your Flo by Moen app
  • FloSense technology enhances Flo the device security parameters and optimizes water savings by understanding the homes water use and tailoring protection to each home
  • Use the app dashboard to see how much water you're consuming daily and set conservation goals to encourage saving water and money for your home
  • See live water use including: water flow rate (GPM), pressure (psi) and temperature using the apps control panel
  • See historical data of your home’s water consumption
  • Compatible with 1 in. - 1.25 in. pipe diameter (consult a professional)
  • No point sensors or other leak sensors needed
  • Get even more out of your smart water shutoff with Flo protect, a comprehensive subscription service that lets you store and access more of your home water's data, provides a deductible reimbursement guarantee and opt-in to professional monitoring from a trained water concierge for added peace of mind
  • Everything needed for installation is included in box; professional installation is recommended and takes just a few hours when home meets installation requirements

  • California residents

Info & Guides

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Inlet Diameter (In.)
Inlet Size
1 In.
Outlet Diameter (In.)
Product Depth (in.)
2.6 in
Product Height (in.)
5.9 in
Product Length (in.)
5.75 in
Product Width (in.)
2.6 in
Valve Inlet Diameter (in.)


Non-Potable Water,Potable Water
Color/Finish Family
Compatible Pipe Material
Compatible Product
Corrosion Resistant,Dielectric,Lead Free,Quarter Turn,UV Resistant,With Excess Flow
Inlet Fitting End Type
Pipe Thread
Maximum Pressure (psi)
Maximum Working Temperature (F)
Outlet Fitting End Type
Pipe Thread
Pack Size
Power Options
Product Weight (lb.)
4.5 lb
Remote Access
Remote Access
Requires Hub?
No Hub Required
Smart Home
Smart Home Enabled
Smart Home Protocol
Stop Valve Type
Valve Configuration
Valve Connection
Pipe Thread
Valve Type
Supply Stop
Voice Control Hub Required
No Hub Required for Voice Control
Works With
Alexa, Alexa, Google, Google Assistant

Warranty / Certifications

Manufacturer Warranty
One Year Limited

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4.5
    out of 141 reviews
  • 84% recommend this product
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Showing 1-10 of 141 reviews
Buyer, be careful!!
We bought this product after having leaks from our hot water hoses twice in five months. My plumber installed it and said it was easy to install with what came in the box. The learning phase lasted barely seven days. Ideally, the learning phase would last two weeks in my opinion. I get alerts when I do more than one load of laundry a day. I’ve gotten alerts for taking a 10 minute shower. Want to know how fun it is to find out you’ve gotten a message that your water is getting shut off and you’re completely soaped up?! And now, this morning, my garage has a nice amount of water from my outside faucet that has been slowly and steadily dripping all night, but did I get an alert? No. So, in reality, this $550 device will detect what it perceives as huge leaks, but won’t send alerts for the small. Honestly, I’m feeling a tiny bit deceived. At least the water in my garage didn’t ruin anything in my house.
by Jolene
Response from MoenJul 24, 2020
Hello Jolene,
Thank you for your review. Our team will be in touch to help you configure your system so that you are not disturbed while using your water. Moen
    • Recommended Product
    9 people found this helpful
    All good but price little bit high.
    All good but price little bit high.
    by Obchik
    • Verified Purchase
    • Recommended Product
    1 person found this helpful
    You need to be familiar with plumbing to install this product. The wireless pairing was easy if y...
    You need to be familiar with plumbing to install this product. The wireless pairing was easy if you have a smartphone because you need to scan a barcode on the unit PRIOR to install. You need an electrical outlet near the unit. There are some Pros and Cons: PRO: Detects water pressure, which is invaluable information. CON: Cannot do anything about it. Since mine was far too high I had to install a pressure reduction valve to protect my home. PRO: Every night it closes the valve and tests the line for leaks. CON: If anyone uses the bathroom or turns on water turning the test, it detects it as a leak. PRO: It watches for excessive water usage and will notify you. CON: It takes 5 minutes to notify you and the 15 minutes before it shuts off the water. That is a LOT of water damage if it is a real leak. CON: It does not have leak detectors. It just looks at how long the water is running. You can get a third party leak detector and manually turn off the water if it tells you there is a leak or automate it. CON: Cannot tell legit water use from good. I suggested a sensor on the house drain to detect if the water is going down the drain signaling legit usage, but nothing has been developed. PRO: Has a nice app to monitor use and notify you of problems. CON: Several of the features require a $5 month app fee to see the amount of water used by appliances. Mine has been on for 3 weeks and no data has appeared because it says the system is "Learning" our water use. CON: We have had the unit shut off the water during showers of several family member in a row. It is not fun to be soaped up and the water shuts off. We did not hear the notification that the water was going to be shut off because we were in the shower. I give the product a reserved recommendation because the problems can be fixed with add on products.
    by WylieCoyote
    Response from MoenDec 23, 2019
    Hello WylieCoyote,
    Thank you for your feedback. Although the Flo system does not have a pressure reducer we are glad that the data was able to inform you to take action when it detected the pressure was way too high. We have found this to be the case in many homes that do not have a PRV. Our team is always working on improvements and will offer more products in the near future. If you need assistance, please contact us at support@meetflo.com if you need any assistance.
      • Recommended Product
      12 people found this helpful
      As a conservationist and green supporter, I have installed several devices in my house to help my...
      As a conservationist and green supporter, I have installed several devices in my house to help my family and I do our part to save the environment. The Flo by Moen water monitoring device is my most recent purchase to help me monitor and reduce water usage. Pros: Easy install Easy setup Helps change water usage behavior
      by Rowbokopp
      • Verified Purchase
      • Recommended Product
      This valve/system is well designed, high quality, and is working well for me!
      This valve/system is well designed, high quality, and is working well for me!
      by Cherty
        • Recommended Product
        I bought this when it was a Buy of the Day as I have an old home built in the 1800's and don't tr...
        I bought this when it was a Buy of the Day as I have an old home built in the 1800's and don't trust the plumbing considering it's age. Was pretty easy to install. I went with Soldering fittings. But you can also use SharkBite or Compression fittings. After installation connecting to the Wifi with the App was quick. But it doesn't actually begin the process of monitoring and protecting the plumbing until 7-10 days after installing as it does a learning process to determine what you normal water usage is in an average week. The device itself has
        by WesKM
        • DIY
        • Verified Purchase
        • Recommended Product
        6 people found this helpful
        I installed myself with a friend about four weeks ago and had no problems. I followed the instru...
        I installed myself with a friend about four weeks ago and had no problems. I followed the instructions exactly and all went smoothly. I can't say anything about support folks because I did not need them. The app is easy to use and the information it provides is very usefull. I have noticed I am more aware of water usage and therefore waste less water which is a good thing. I have had two family members with damage from water leaks recently and I was determined not to let it happen to me. After the learning period on the app, I found a leaking toilet I was not aware of which will save water and money. The control and diagnostics of house water system and peace of mind the Flo provides are priceless. My wife took a long shower the other day and I got an alert from Flo about large water useage. This thing is cool!
        by BrianS
          • Recommended Product
          7 people found this helpful
          Three days into installing it. The detection for Flow rate has stopped and usage shows zero. Trie...
          Three days into installing it. The detection for Flow rate has stopped and usage shows zero. Tried reaching support at 3 PM ESTtwo days back on phone to be told on recorded message no one is available to take call. Sent email to receive instructions two days later on how to rectify fault. Tried No. 1) Disconnect power and restart -Didn't work, 2) Shut of water supply and re-start slowly-Tried multiple times , has not worked. 3) Call plumber---Have called one and waiting fo him to check system tomorrow. Who will cover price for this expensive unit plus the extra visit by the plumber. Very disappointed!
          by santript
          Response from Flo TechnologiesJan 11, 2019
          Hello Santript,

          Thank you for your review and we apologize for any inconvenience. There are some things to consider when installing the device on a plumbing system provided by a well. Please give us a call at 844-Meet-Flo so we can quickly resolve your issue.


          - Vince FloTechnologies
          • Verified Purchase
          24 people found this helpful
          I am an avid DIY'er and geek. I love getting data about all aspects of my house. I recently purch...
          I am an avid DIY'er and geek. I love getting data about all aspects of my house. I recently purchased an energy monitor, use automated door locks etc. I was super excited just over a year ago when I was able to finally purchase one of these devices, and made it in on the beta program, my unit is actually marked as "engineering sample". The production version, which I thought I was supposed to be provided having been on the beta program, was never provided to me and may solve some of the issues below, however only the ones related to the hardware. Overall: Sadly I've not been very happy with the device. Even after the cost of the device the installation in the greater Washington, DC area was over $300 and that was from the installer that FLO recommended I use. Very expensive. I would have hoped that for the extra expense and effort required of the in-line installation the features and support would be better. I am able to turn water on and off via the application however can't access data in a very granular way. Also leak detection does not seem to work very well when water pressure is on the lower side of recommendations for a single family house. If they address the issues and I've provided more detail if you care to read, I'd definitely recommend this product however at this time I can't recommend the investment. You will likely be underwhelmed and disappointed. Additional detail: Installation: If the pipe you intend to install this on is running against a wall you will have issues with the installation and even getting the weird cover back onto the device once installation is complete. In the end my installer wasn't able to get the piece on. I'm not sure what the purpose of that cover even is. Rotating the plastic nut that creates the seal is also extremely difficult when the pipe is close to the wall. This affected me because after the installer left, after waiting over a week, I was still not seeing any flow or data from the device although it was online. Turns out I needed to turn off the water in the house, take the device off and clean out the impeller so that it would move freely. There were no alerts notifying me that there was a problem just that is was doing a calibration. I had to call support and have them send me a supplemental instruction on how to clean. I did all that work by myself as I didn't want another high cost plummer visit. Operation: Operating the device once I finally got it online and cleaned out is fairly straightforward. It seems to provide reasonable accurate information with regard to flow, pressure and temperature, and I immediately realized I needed to reduce the pressure I am getting from the city (90 psi), more about that later. If you want anything more granular though you will be grealy disappointed. I am currently paying the additional $5/month for their total protection which increases the amount of insurance but is also supposed to provide me with more data. What fixtures am I using, how often, how much is for showers vs washing dishes. This is data that FLO is capturing and recording for everyone however only showing it to the individuals that pay extra on a monthly basis. The data from the fixtures is lackluster at best. It often captures washing hands as a use of the toilet... As mentioned, accessing the core data through the website or the application is fairly straightforward however if you want do download that data in more than and excel export the FLO team will not provide you with access to do that. In fact if you try any sort of automated query for the data you will get a call from the FLO team asking you to stop. In my case that call came a few weeks after I'd attempted something and I'd totally forgotten about it. Even though I called them back the same day they were less than helpful in helping me identify what I'd done previously that was making requests. When advised my account would be suspended and deleted I again asked for some help and received no response for 45 days. After receiving that additional information it took only 30 minutes to resolve the problem. I'd imagine this post on a vendors site will result in a quicker response than my support ticket. The unit did immediately identify I had an issue with high water pressure from the city, which was great. It did result in needing to install a pressure reducing valve in front of the FLO which meant dealing with those nuts again up against the wall but again I was able to do this without the need of the plumber. After the successful installation of the reducing valve and setting the pressure down to 45 psi I was alerted daily that there was a small leak detected during the daily test. I had to increase the pressure back up above 55 before those daily failures went away. This leads me to wonder how well it is going to detect an actual leak.
          by DomusData
          Response from Flo TechnologiesNov 29, 2018
          DomusData - The issues you’ve highlighted here are primarily due to the device being an early generation device that is not for sale any longer.

          We are pleased to hear that the device identified the need for you to install a pressure reducing valve to protect your home from high water pressure which could cause serious plumbing issues in the future.

          It seems as though you have had some difficulty coordinating with our support team to receive your production unit, please reach out to Support@MeetFlo.com and I assure you they will provide you with the production unit timely. Should you prefer to swap out the early generation device for the production unit yourself, the Support Team can provide instructions on how to do this, preventing the need for a visit from a plumber. The Support Team has extensive plumbing knowledge in order to assist you performing this task yourself.

          Please note that our system is not set up for individuals to create automated queries for data. Our platform currently provides data for several time periods that you can download into an excel format.

          Once you receive your production unit, you can always contact Support at Support@MeetFlo.com or call us at 844-MeetFlo should you have any other questions or concerns. FloTechnologies
            30 people found this helpful
            Absolutely love this valve. Wish it were a little less expensive, but worth it in the long run. I...
            Absolutely love this valve. Wish it were a little less expensive, but worth it in the long run. I purchased this valve as I was concerned about a possible freeze up of the domestic water lines during the winter months in my home. We moved into a condo in Connecticut in 2016, and the winter weather can be pretty severe. We've had a few issues where the tub drain line has frozen, but thankfully, no freeze-ups of any water lines. When I did some research, the Flo valve is the one that appealed to me the most. Despite it's cost, I really liked the fact that it is a whole house solution as opposed to the spot leak detectors that are on the market. Yes they are cheaper but if the water rolls the wrong way you'll get no push notification of a leak, and how many of these type leak detectors would you need to secure the whole house,. The Flo uses temperature, flow, & pressure to troubleshoot any problem situation and acts accordingly by closing the main water supply valve to the house. In my opinion, this could prevent a catastrophic event from happening by mitigating the water damage due to a leak or freeze-up. The Flo app is very well organized, and easy to use & and well laid out. If there is an issue, you'll receive push notifications, and depending upon the severity of what it detects, the main water valve to the house will be shut until such time that you deem it safe to reopen. In addition, if you should decide that the valve needs to be closed, you have the ability to do that as well, as this valve can also be controlled using wifi.
            by Lbmmac
            • Verified Purchase
            • Recommended Product
            2 people found this helpful
            Showing 1-10 of 141 reviews