













💧 Stay ahead of leaks — because your home deserves smarter protection.
The Moen Flo Smart Water Leak Detector offers 24/7 electronic sensing with a 48-inch remote sensor cable, delivering real-time moisture, humidity, and temperature alerts via a dedicated smartphone app. Designed for easy installation and whole-home scalability, it runs on a single lithium CR123A battery with approximately one year of life, providing proactive water damage prevention in critical areas like basements and laundry rooms.










| ASIN | B0855BFQCZ |
| Batteries | 1 CR123A batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Metal |
| Battery Description | Lithium |
| Best Sellers Rank | #11,161 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #16 in Water Detectors & Alarms |
| Control Method | App |
| Customer Reviews | 3.5 3.5 out of 5 stars (2,794) |
| Date First Available | February 1, 2020 |
| Description Pile | Lithium |
| Finish | White |
| Included Components | battery, remote sensing disc with 48" extension cable, self-adhesive wall mount sticker, smart water detector, wall mount base, wall mount screw |
| Item Package Quantity | 1 |
| Item Weight | 4.5 ounces |
| Item model number | 920-004 |
| Manufacturer | Moen Incorporated |
| Maximum Range | 48 Inches |
| Mounting Type | Tabletop Mount |
| Noise Level | 51 Decibels |
| Number of Batteries | 1 CR123A batteries required. (included) |
| Part Number | 920-004 |
| Pattern | Leak Detector |
| Product Dimensions | 1.46 x 2.64 x 3.28 inches |
| Sensor Technology | Electronic Sensor |
| Size | 1 Sensor |
| Smart Home Compatibility | Smart Home Compatible |
| Style | FLO by Moen |
| UPC | 860000103596 |
| Warranty Description | 1 Year Warranty |
N**K
Works well with a connection caveat
I just installed 12 units in my house. As a background, I had a different brand installed in my house and second home. All worked well. After a year or so, my wifi was upgraded at my house. Now I coukd not reconnect the units to the wifi in my house. But the units continued to work at my second home. So, after not having leak detectors for some time, the hose on our dishwasher broke and was flooding our kitchen. Luckily I was right there when it happened and shut the water down, which brings me back to how important leak detectors are. So after searching, I decided on the Moen. I easily installed all 12 Moen units. One did come with a dead battery. The issue I see that many have is that these units have to connect up to Wifi 2.4 and not your general 5.0 wifi. And some wifi appliancees out there are pretty ‘picky’ on which 2.4 works. That’s my experience. These Moen installed easily, as my 2.4 wifi worked well with them. My experience has been some brands will work with my wifi and others won’t. I’m lucky with the Moen. I also tested one by purposely putting a very slight film of water around a detector. And it worked flawlessly by sending an alert. I also liked the app very much. Gives you the temp and humidity. And you can set the type notifications and what info. So far I’m very pleased. Just be aware of those who had trouble connecting or staying connected. Comes down to the quality of their Wi-Fi. Like I said, some brands will work for you, and others won’t. I’m happy.
W**C
Do not like ......update...I hate it all...swapping for a D-Link system
I love these devices but I hate the cost cutting of batteries only. In theory, you put these were water can leak but you would not notice in time. These would go under counters, in attics, in washrooms, and other areas that often are difficult to reach. I would pay double the price to have an AC adapter option. Exactly 1 year into my install the batteries are failing and the batteries are expensive and not environmentally friendly to dispose of batteries. The battery cost and hassle of replacing and buying batteries every year makes this product less than it could be. Ideally, it is better on AC. If you lose power, the device cannot talk to the wifi so the only reason for the batteries is bottom line cost and agency approvals. It was a marketing decision....not an engineering decision. I would buy another 3 pack and pay the additional cost of having the AC option. 2/24 I am done. I have come to hate the Moen design. The base unit does not sit flat in a cabinet and when you use the expensive cord it also does not sit flat. Where you put these devices is subject to disruption so the sensors are always getting moved which the design should expect but not with Moen. If you bump the cradle the connection to the sensor wire is lost and you will never know. The battery life is more like 8 months at most and I have had these long enough to prove it. The alarm volume is a joke. You cannot hear it 30 ft away unless the home is completely silent. How ridiculous to make an alarm and make it so quiet that if it is in a cabinet closed then no one will hear it beeping. I am moving to a D-Link that is a different setup and after Moen I can see why the D-Link makes sense and cents. It uses a hub that plugs into AC and has a "screaming" loud alarm. The Hub supports up to 24 sensors making the D-Link similar in price for the first 2 sensors but you saves hundreds of dollars if you need 6 or more. With the new system, you take a $25 sensor and place it on the floor of the cabinet, pan, or wet area floor. No mounting, no harness. The sensors link to the hub and that links to an app on your phone.
J**.
Decent - updated
This alarm works perfectly at detecting water. A few caveats: As people mentioned, the pairing and Wi-Fi setup steps are missing from provided setup instructions, however, within minutes I located a short YouTube video that quickly filled in the blanks, and once you do this, it takes a few minutes to connect. Second caveat is that the provided alarm is very quiet. Your smartphone has louder ring options. So, you really need to rely upon the iPhone notification alerts to have a clue that it is going off, unless you are sleeping right next to your sump pump or wherever. I rigged mine to hang into a basement drain with the sensor on cord. Works. My sump failed, and I would never have known since I don’t go into basement daily and check, and dehumidifier regularly drains to this pump. I got a notification on iPhone from the Flo app while away from home, and checked sump upon return to determine sump had failed, but water was still in drain, so no overflow. I caught it early enough to minimize cleanup. It’s just a little, relatively cheap device, but it works.
M**L
Unfortunately app does not work in UAE so I had to return them.
I**O
SE INSTALA FACILMENTE Y LA APP FUNCIONA DE LO MEJOR
M**S
I like that I ocassionaly get loss of signal alarms as it usually means my router needs a reboot as other devices are down too.The audible alarm is loud enough but not overpowering
P**N
After reading good reviews of this product ordered a box of three. The instructions, received upon arrival said "download associated app before unpacking" . Went to Google playstore. App "not available in your region". Huh? Tried using another device. Same. Went to company website. Very unhelpful, and trying to find email contact almost impossible. After 30 mins tracked one down. Fired off email. 24 hours later no reply. Resorted to social media. At last a response: "Android App only available in US and Canada". Well what a waste of time that was. Product therefore almost useless and returned. Luckily the seller was superb and understanding and refund easily obtained. So don't buy if you want the product to work with the android app!!
K**K
Used in the water leak subsystem of my home automation system. Tried several commercial water leak detection products but all came with a discrete sensor that only detects a leak if placed in a depression under the source. This sensor cord is so much better as it is 6 feet in length and can be connected in a chain of up to 3. It can detect water leaks along its whole length. Uses. Standard 3.5 mm connection. I have this connected via low voltage wiring to an ESP32 microcontroller that can handle 5 of these detector cords For most non-diy people, I would suggest replacing the discrete sensor that comes with most leak detection products with this cord sensor. Those discrete sensors are not very useful where you are not able to place them in sump directly under your washing machine for example. They are likely to miss small leaks but would work well if a pipe burst...
Trustpilot
1 week ago
1 month ago