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From the manufacturer

DISCOVER FIBARO SMART HOME & EXPERIENCE THE PEACE OF MIND YOU HAVE NEVER FELT BEFORE

SAFETY

Thanks to FIBARO, you always know what is happening at your home. The system notifies you about all disturbing incidents and immediately responds to them – e.g. by closing the electrovalve to prevent leakage or by activating alarm when unwanted motion is detected. It protects and cares for your entire home.

COMFORT

FIBARO smart home provides comfort & helps in your everyday life. With just one click of the button, gesture or with a word, you can easily control your home appliances, lighting, blinds, temperature, alarm, monitoring or watering system. Most importantly – you can do it from anywhere in the world.

SAVINGS

FIBARO enables you to monitor the on-going energy consumption. It can save you money by turning off the lights in empty rooms or adjusting the temperature to match everyone’s needs & current weather conditions - it saves money and the environment.

Wireless

No wires = non-invasive installation and repair! FIBARO does not require any wires of the building structure or electrical installation. Our technology is wireless, modern and safe, thus allows you to add more and more devices in a completely non-invasive way.

FIBARO manufactures Z-Wave devices and hardware compatible with the Apple HomeKit platform. These are two separate lines of devices adjusted to the needs and preferences of our customers.

Remote

With FIBARO Home Center app you can be in constant contact with your home – easily manage and control it from anywhere in the world.By using the app, you will always know what is happening in your home, and in case of any dangerous situations, you will be able to immediately react and keep everything under control.The FIBARO Center app is being developed & updated with the help and feedback from over 1000 power users of our system. Every day we work hard to improve and expand its functionalities to address all the needs of our Users.

Complementary

FIBARO is an open and extremely flexible system. It is a wireless network which provides a sense of control, security and pleasure for all household members.FIBARO already has hundreds of plug-ins and integrations with devices of such manufacturers as: Google, Apple, Samsung Smartthings, Amazon, Bose, D-Link, Yamaha, Philips or Yale.This gives you the ability to choose and combine products of different brands and constantly explore the endless possibilities of smart home solutions.

Modular

With over 10,000 installers and resellers worldwide, Fibaro is the preferred brand of Z-Wave professionals. Here’s why: It’s a one-time investment with no monthly fees. It can operate 100% locally, even for account registration. That means no Internet connection is necessary to run automations. You can always opt in to cloud connection for secure remote access. It can be used as a slave hub with Home Center 2 for robust coverage of commercial spaces and larger home automation projects.

Reliable Z-Wave protocol

Free Android and iOS App

Integration at its finest

All your needs fulfilled

Valued and recognizable

2017 CES Innovation Award
2019 CES Innovation Honoree
2014 & 2016 iF Design Award
Z-Wave Alliance Member
CEDIA Founding Member

Get to know FIBARO

FIBARO is a global brand that provides solutions for building and home automation. In just a few years’ time, the FIBARO system has spread throughout 6 continents, becoming one of the most advanced, wireless smart home systems in the world.

Our solutions are entirely designed, developed & produced in Europe. Our engineers & employees constantly strive for perfection by improving the system, so that it serves its Users at best.

global presence
in-house design, development & production in Europe
over 150 registered trademarks & patents
a wide range of smart home products and capabilities
hundreds of plug-ins and integrations with devices of such manufacturers as: Google, Apple, Samsung, Amazon, Bose, D-Link, Yamaha, Philips or Yale

Product information

Technical Details

Manufacturer	‎Fibaro
Part Number	‎FGFS-101 ZW5
Item Weight	‎3.2 ounces
Product Dimensions	‎3.8 x 3.7 x 1.4 inches
Item model number	‎FGFS-101 ZW5
Batteries	‎1 CR123A batteries required. (included)
Is Discontinued By Manufacturer	‎No
Size	‎FGFS-101
Color	‎White
Material	‎Plastic
Power Source	‎Battery Powered
Voltage	‎24 Volts
Item Package Quantity	‎1
Included Components	‎Flood Sensor, 1xCR123A Battery, User Manual
Batteries Included?	‎Yes
Batteries Required?	‎No
Battery Cell Type	‎Lithium Ion
Warranty Description	‎1 year

Additional Information

ASIN	B01H1M0SP6
Customer Reviews	(123) 3.8 out of 5 stars
Best Sellers Rank	#873,997 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #519 in Water Detectors & Alarms
Date First Available	August 6, 2016

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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Product Description

The Fibaro Flood Sensor is the most functional water leak sensor for your smart home. It is designed to either be placed on the floor or a wall with the gold-plated water-sensing probes Extended by a connected wire. The device can be battery or VDC powered (12/24 VDC). it has a built-in tilt sensor that reports any movement of the device to the central Z-Wave controller. The Fibaro Flood Sensor is buoyant and can float on the waterfall surface. It has a built-in temperature sensor that can alert you if there is an increase or decrease in temperature, which can protect your home from damage caused by frozen pipes. The Fibaro Flood Sensor is compatible with most Z-Wave smart hubs such as Home Center 2 and Lite, SmartThings, HomeSeer, Vera, Clare Controls, and Nexia.

WARNING:

CHOKING HAZARD -- Small parts. Not for children under 3 yrs.

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Safety documents

User Manual (PDF)

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Customer reviews

123 global ratings

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Customers say

Customers give positive feedback about the flood sensor's design and style. However, the sensor's reliability, connectivity, and alarm functionality receive mixed reviews, with some customers reporting it works fine while others find it unreliable and unable to maintain connection. Moreover, the water resistance and noise level aspects are also mixed, with one customer reporting it saved them from water damage while another found it unreliable. Additionally, the battery life receives negative feedback, with one customer noting it eats through batteries quickly.

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6 customers mention design, 5 positive, 1 negative

Customers like the design of the flood sensor, describing it as stylish.

Great style. I had a little difficulty getting this to pair with my z-wave hub. But, I'm pretty stubborn. So, I did get it to pair....Read more

...Overall the device is compact and attractive. We'll see if the battery really lasts two years as the product literature says....Read more

I love how small and appealing the look is. I tested it connected to my smartthings V2 hub and it worked without issue....Read more

Clever design. Well built. Sounds off in water. Have not got it on the wifi yet. Will be using as a stand alone alarm under old hot water tank.Read more

21 customers mention reliability, 13 positive, 8 negative

Customers have mixed experiences with the sensor's reliability, with some reporting it works just fine while others find it unreliable.

Works well. It makes an humming sound but it's not in a place where anyone can hear it.Read more

...Unreliable!! Would not recommend this product as a moisture alarm. Too flaky of a device to rely on and to keep your basements safe from water damage.Read more

...This sensor works perfectly in tandem with the valve cut off switch.Read more

...Once I got past these, works fine and I get a notification on my smart things app when it detects water.Read more

17 customers mention connectivity, 7 positive, 10 negative

Customers have mixed experiences with the flood sensor's connectivity, with some successfully pairing it with Smartthings hubs while others report issues maintaining the connection and devices disconnecting from the network.

does not stay connected to hub, even when directly next to it.Read more

Pairs easily, probably thanks to Z-Wave Plus talking to a Z-Wave Plus controller, and seems very reliable....Read more

...I like the style, but I didn't like the problems pairing.Read more

...They paired easily with my Smartthings hub and tested out well....Read more

10 customers mention alarm functionality, 6 positive, 4 negative

Customers have mixed experiences with the flood sensor's alarm functionality: some report it provides notifications to their phones, while others mention it never alerts their phones.

I have this set up with an automatic cut off valve. This sensor triggers an alarm and will turn on the lights in the bedroom and living room when it...Read more

Came home to it beeping....but never alerted my phone. Despite me testing numerous times in the past.Read more

...It warned us right away when the washer hose sprung a huge leak. I only use the sensor on battery, which has lasted over a year now....Read more

...granite surface with one of the 3 pins soaking in a water droplet, no alarm, and even when I set it completely in water and the alarm went off, it...Read more

10 customers mention water resistance, 6 positive, 4 negative

Customers have mixed experiences with the flood sensor's water resistance, with some reporting it detects water well and saved them from damage, while others find it unreliable.

...Through Smartthings it provides a notification to my phone. Detects water well and, from my limited use, does not appear to sporadically alarm...Read more

...I had to drill one in the top of the case. 2. It doesn't sense water if the battery is inserted....Read more

...The water leak sensors are nice when they work, but $50 is too expensive to throw them out after only two months....Read more

...Also, I seriously doubt it's waterproof as the advertisement video suggests....Read more

7 customers mention noise level, 4 positive, 3 negative

Customers have mixed opinions about the noise level of the flood sensor, with one customer finding it not loud enough, while another reports that the audible alarm is much louder than expected.

...The sensor has an LED light and an audible alarm. It's not loud but if you would notice it if you are in a nearby room....Read more

...hole on the bottom for the beeping signal of the alarm, but this gets muted a bit when it gets covered with water....Read more

Clever design. Well built. Sounds off in water. Have not got it on the wifi yet. Will be using as a stand alone alarm under old hot water tank.Read more

...The only knock on it I have is that I wish that the audible alarm were much louder.Read more

5 customers mention quality, 2 positive, 3 negative

Customers have mixed opinions about the quality of the flood sensor, with some finding it good while others describe it as very poor.

...up as a generic device with only turn on and off functions that are useless....Read more

Good product....Read more

Horrible product!...Read more

...They paired easily with my Smartthings hub and tested out well....Read more

5 customers mention battery life, 1 positive, 4 negative

Customers report issues with the sensor's battery life, with one customer noting that it eats through batteries quickly and another mentioning that the battery level sensor doesn't update properly.

...Its battery level sensor also does not update, and its reported levels are not to be trusted (it's reported 1% levels on brand new batteries)....Read more

Works great with Samsung SmartThings. I had an issue with battery life at first....Read more

...Devices can disconnect from the network frequently, eat through batteries fast and just be unreliable....Read more

...Being able to use this with a DC power supply and the internal battery as backup when the power goes out was the primary reason I purchased 2 of...Read more

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Chris V
Works Well
Reviewed in the United States on October 16, 2021
Verified Purchase

Connected easily with Samsung Smartthings. Has fairly loud high pitched beep for wet alert. Through Smartthings it provides a notification to my phone. Detects water well and, from my limited use, does not appear to sporadically alarm easily due to light moisture. Been in use for 2.5 months and is at 85% battery. I've tested it randomly a few times over that period and it works. It does annoyingly beep whenever you move it as part of a tamper alarm (not full alarm, just like a warning beep), which I haven't been able to figure out how to disable. It's good if you have a place you can put it out of sight (altho it's not bad looking) where it won't get moved often.

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jimmunology
Works with Vera after some tinkering
Reviewed in the United States on October 6, 2024
Verified Purchase
Even though Vera is no longer supported, I still use it because I haven't yet found an alternative I like. This flood sensor was recognized by my Vera Edge right away. There's even a device setting for Figaro FGFS-101 to choose from. However, when paired, the device is set up as a generic device with only turn on and off functions that are useless. As mentioned by another reviewer, you can manually edit the advanced settings to fix this. I pulled these settings from an Ezlo forum. Replace the following:

device_file: D_GenericIO1.xml with D_FloodSensor1.xml
device_type: urn:schemas-micasaverde-com:device:GenericIO:1 with urn:schemas-micasaverde-com:device:FloodSensor:1
manufacturer: Fibar with Fibaro
model: empty with FGFS-101 Gen5
device_json: D_GenericIO1.json with D_FloodSensorWithTamper1.json

This did the job and now I can arm and disarm the sensor as I should. Everything works fine.

Note that the temperature sensing function is controlled by another device that gets set up in Vera at the same time as the flood sensor.

Overall the device is compact and attractive. We'll see if the battery really lasts two years as the product literature says. Also, I seriously doubt it's waterproof as the advertisement video suggests. There's a small hole on the bottom for the beeping signal of the alarm, but this gets muted a bit when it gets covered with water. If you were to rig this up with external power, you can't really use this for wiring and would need to drill a hole somewhere else in the case.

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dl24
Non-existing customer support for warranty replacement
Reviewed in the United States on May 28, 2020
Verified Purchase
I purchased six Fibaro water leak sensors over the past year or so. The most recent device failed after only two months, well within their 24 months warranty period. The device disconnected from the network and gets stuck in the factory reset procedure (which other people have described as an issue before).

I contacted Fibaro's U.S. office by email at support-usa@fibaro.com multiple times over a period of a week and did not receive any response. The water leak sensors are nice when they work, but $50 is too expensive to throw them out after only two months. It is extremely disappointing that their customer service is so unresponsive and that they do not honor their own warranty policy.

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Michael C.
Smart water sensor
Reviewed in the United States on November 22, 2021
Verified Purchase
I have this set up with an automatic cut off valve. This sensor triggers an alarm and will turn on the lights in the bedroom and living room when it senses water. Having both was the most cost efficient solution. There are all in ones that would be a bit simpler but they cost a lot more. This sensor works perfectly in tandem with the valve cut off switch.

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Amazon Customer
Good product - only semi functional with Hubitat
Reviewed in the United States on July 29, 2022
Verified Purchase
Good product. Being able to use this with a DC power supply and the internal battery as backup when the power goes out was the primary reason I purchased 2 of these. Its also great that an external sensor can be wired in as well.

I used this for the DC power: 12V Power Adapter for Yamaha PA130 PA150, UL Listed Power Supply AC Adapter. Just snip the barrel end off. And yes this is probably overkill, but I wanted something UL listed.

Overall: great product.

Note: I purchased this to use with a Hubitat C5/C7 z-wave hub. Good: built in driver for the sensor. Bad: Driver is half broke and Hubitat knows this. In 8 months there has been zero effort to fix this. Buyer beware. Problem: The device works on EITHER battery OR DC. But not both. According to Hubitat - they didn't bother finishing the driver. More information: surf the Hubitat forums. DO NOT BUY THIS EXPECTING THAT HUBUTAT WILL FIX THIS PROBLEM IN THE NEAR FUTURE! OR EVER! OR that your pestering them will have any effect.

If you're looking for something for Hubitat and only want battery OR DC or you just want the external sensor capability, there are problably better (cheaper) options.

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Tech Guy
Saved us From Water Damage, Easy to Connect to Hubitat
Reviewed in the United States on January 16, 2025
Verified Purchase
I use this in our laundry room connected to Hubitat, which is shared with HomeKit. It warned us right away when the washer hose sprung a huge leak. I only use the sensor on battery, which has lasted over a year now. This is the third brand of z-wave water sensor I’ve used and so far I like this one best.

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Brian C. Wilson
Highly versatile, perfect for hot attic use
Reviewed in the United States on February 11, 2022
Verified Purchase
I needed two water sensors to monitor the HWH and A/C evaporator drain pans in my attic which can get as hot at 130+ deg F in the summer. So that ruled out all battery-powered sensors as the battery limits them to ~100 deg F, and converting other ones to battery operation by fab'ing a dummy battery wired to a DC power source I found very challenging. These Fibaro water sensors are actually designed for running off a direct power source (allowing a 15 deg F to 130+ deg F operating range) AND have the ability to use an external wired sensor. The external power source was $5 and the remote sensor wire (doorbell wire) was $0.75/ft. And these have a super handy terminal strip for both connections. They paired easily with my Smartthings hub and tested out well. They also provide the added benefit of giving the exact temperature in my attic, key information to have when temps drop below freezing and you've got water pipes in the attic. For my use case, this was the perfect solution.

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Brian C. Wilson

Highly versatile, perfect for hot attic use

Reviewed in the United States on February 11, 2022
I needed two water sensors to monitor the HWH and A/C evaporator drain pans in my attic which can get as hot at 130+ deg F in the summer. So that ruled out all battery-powered sensors as the battery limits them to ~100 deg F, and converting other ones to battery operation by fab'ing a dummy battery wired to a DC power source I found very challenging. These Fibaro water sensors are actually designed for running off a direct power source (allowing a 15 deg F to 130+ deg F operating range) AND have the ability to use an external wired sensor. The external power source was $5 and the remote sensor wire (doorbell wire) was $0.75/ft. And these have a super handy terminal strip for both connections. They paired easily with my Smartthings hub and tested out well. They also provide the added benefit of giving the exact temperature in my attic, key information to have when temps drop below freezing and you've got water pipes in the attic. For my use case, this was the perfect solution.

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Allistar
Works Well
Reviewed in Canada on May 9, 2019
Verified Purchase

Works well with ST. Easy to include in ST hub. Very sensitive for moisture. I use this under the shower inside the ceiling so that any small leak is notified before it becomes a major repair job. I chose this because it can be hard wired. With the installation in the ceiling I do not have to reach again to replace the batteries.

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Van Dacca
Great, but has a design flaw when plugging into the wall.
Reviewed in Canada on April 1, 2018
Verified Purchase
Unit works great, but the reason I only gave it 4 stars is because the unit firmware could be better. The reason I bought this unit is because of the option of powering it off of AC. Once I purchased a transformer and wired it up, if you also have a battery installed (eg. as a backup), it quickly drains the battery in less than 1 day and starts generating 4% battery warnings. If I take the battery out, I still get the warnings every few days.

I tried putting in a fresh battery and resetting the unit so that it reported 100% battery, then plugged into AC and removed the battery. An hour later I started getting 4% battery warnings again. I guess I'll have to live with these warnings every few days until hopefully one day they'll release a firmware update.

This sensor is connected to a 1st generation SmartThings Hub. Other hubs may work handle this issue differently.

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Michel Renaud
I’ve purchased four of these and they work great. Loud alarm and very sensitive
Reviewed in Canada on November 12, 2017
Verified Purchase
I’ve purchased four of these and they work great. Loud alarm and very sensitive. They’re small enough that they don’t get in the way. I use them with a Samsung SmartThings hub and configuration was pretty straightforward. This is better than the D-Link WiFi sensor I got before.

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James Alderson
didnt work. Returned
Reviewed in Canada on January 26, 2021
Verified Purchase
didn't worknas desc. Won't connect, wrong directions, no answer at tech support.

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Steven
Easy to install
Reviewed in Canada on November 15, 2021
Verified Purchase
Easy to install, helpful online documentation, compatible with SmartThings hub. So far so good.

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FIBARO Flood Sensor, Z-Wave Plus Water Leak Detector, FGFS-101 ZW5

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From the manufacturer

DISCOVER FIBARO SMART HOME & EXPERIENCE THE PEACE OF MIND YOU HAVE NEVER FELT BEFORE

SAFETY

COMFORT

SAVINGS

Wireless

Remote

Complementary

Modular

Valued and recognizable

Get to know FIBARO

Product Videos

Product information

Technical Details

Additional Information

Warranty & Support

Feedback

Where did you see a lower price?

Product Description

WARNING:

Safety and product resources

Safety documents

Similar brands on Amazon

Customer reviews

Customers say

Select to learn more

Images in this review

Reviews with images

Highly versatile, perfect for hot attic use

Top reviews from the United States

There was a problem filtering reviews. Please reload the page.

5.0 out of 5 stars Works Well

4.0 out of 5 stars Works with Vera after some tinkering

1.0 out of 5 stars Non-existing customer support for warranty replacement

5.0 out of 5 stars Smart water sensor

5.0 out of 5 stars Good product - only semi functional with Hubitat

4.0 out of 5 stars Saved us From Water Damage, Easy to Connect to Hubitat

5.0 out of 5 stars Highly versatile, perfect for hot attic use

Highly versatile, perfect for hot attic use

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Top reviews from other countries

5.0 out of 5 stars Works Well

4.0 out of 5 stars Great, but has a design flaw when plugging into the wall.

5.0 out of 5 stars I’ve purchased four of these and they work great. Loud alarm and very sensitive

1.0 out of 5 stars didnt work. Returned

5.0 out of 5 stars Easy to install

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Product Summary: FIBARO Flood Sensor, Z-Wave Plus Water Leak Detector, FGFS-101 ZW5

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About this Item

Product Description

Important Information

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Feedback

Works Well

Works with Vera after some tinkering

Non-existing customer support for warranty replacement

Smart water sensor

Good product - only semi functional with Hubitat

Saved us From Water Damage, Easy to Connect to Hubitat

Highly versatile, perfect for hot attic use

Works Well

Great, but has a design flaw when plugging into the wall.

I’ve purchased four of these and they work great. Loud alarm and very sensitive

didnt work. Returned

Easy to install

Product summary presents key product information

Keyboard shortcut shift + alt + opt + D