Best Water Sensors to Monitor Leaks

Review & Comparison, Last Update July 20, 2021
Have you ever come back home and found water flooding? If you have, then you know first hand how frustrating this can be, especially if that flooding caused damage to your property. To prevent that, though, you can use a water sensor. The best water sensors can help avert such situations and detect flood when it is just a small puddle so you have enough time to prevent disaster. ...Read more ...Read less
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BEST 2021
PROS
CONS
OUR VERDICT
Working Method
Detection method
Connection and data transfer
Alarm
Power source
Dimensions
Packaging
Warranty
 
PROS

Thanks to the LoRa technology, the model boasts the industry's longest receiving range up to 1,000 ft in the open area and up to 328 ft indoors.

CONS

The instructions are not detailed enough. 

OUR VERDICT

With the YoLink, you'll get a complete water leakage monitoring system you can either use independently or build into your existing smart home system. Free from Wi-Fi tricks and restrictions, it boasts flawless operation while a longer reach will let you use it in spots where other models fail. It can also integrate with Alexa to control your other smart devices.

detailed parameters
Working Method

Complex

Detection method

Spot sensor (4 probes on the back)

Connection and data transfer

Supports wired connection and 2.4G Wi-Fi connection, Bluetooth, ZigBee, Z-Wave, and other smart home protocols

Alarm

App alerts

Power source

2 x AAA batteries (included)

Dimensions

7.6 x 4.8 x 2.7 inches

Packaging

4 x YoLink smart water leak sensors, YoLink hub, Quick start guide

Warranty

2 years

PROS

The set contains two types of sensors including two sensors with probes on the back for area flood detection and one sensor with a probe on the front for prompt alerts about pipe dripping.

CONS

The screw holes could become bigger after many battery changes.

OUR VERDICT

Govee water sensors will provide solid and reliable control over all sorts of home water leakage and keep you consistently and promptly informed about any potential problems. And the waterproof detector design allows safely installing them in high-humidity areas. 

detailed parameters
Working Method

Complex

Detection method

Spot sensor (2 groups of backwater detector probes,  1 group of front probes for pipe dripping detection)

Connection and data transfer

Wireless connection (Wi-Fi, Bluetooth)

Alarm

100 dB sound alarm, App alerts

Power source

6 x AAA batteries (included)

Dimensions

3.46 x 1.77 x 1.04 inches

Packaging

3 x Water sensors, Wi-Fi gateway, Manual, Service card

Warranty

1-year replacement warranty, Lifetime customer support

PROS

In addition to a common app alert, you can make use of paid SMS and call alarms, which is a really great option if you are somewhere out of Wi-Fi range. 

CONS

It might be a bit hard to pair your phone. 

OUR VERDICT

Small but mighty, this smart water sensor from Shomnau can be installed literally anywhere, be it next to the water filtration system, in the basement, or behind the fridge. Fitted with a 5.9 ft long probe cable, it can adapt to more complex environments and be used to monitor water levels in the pool, aquarium, bathtub, etc. 

detailed parameters
Working Method

Complex

Detection method

Spot sensor (a small detector at the end of the probe)

Connection and data transfer

Wireless Wi-Fi connection

Alarm

80 dB sound alarm, App alerts, SMS or phone call notification alarm function (to be paid for)

Power source

3.7V 500mA rechargeable battery

Dimensions

3.8 x 3 x 1.4 inches

Packaging

Water leak sensor, User manual

Warranty

1 year, 2 months free replacement

PROS

This little pal perfectly synchronizes with other mydlink devices that will let you create your own comprehensive smart home system without added fuss and setup costs. 

CONS

Some users claim setup issues. 

OUR VERDICT

Easy to install and connecting directly to your Wi-Fi network, the water sensor from D-Link will not only detect moisture and let you know that some of your appliances have sprung into leak but also help prevent the damage by triggering other smart devices. Supporting the IFTTT applets, it can simply cut off the source of leakage.

detailed parameters
Working Method

Complex

Detection method

Spot sensor (a small detector at the end of the probe)

Connection and data transfer

Wireless Wi-Fi connection

Alarm

90 dB sound alarm, App alerts

Power source

2 x AA batteries (included)

Dimensions

2.7 x 2.7 x 1.2 inches

Packaging

Water leak sensor, User manual

Warranty

Amazon's 30-day return policy

PROS

The contacts on the sensor top and bottom not only detect leaks but also monitors the environment around. It can let you know about air humidity or temperature changes via a light or sound signal. 

CONS

The battery life is pretty low. 

OUR VERDICT

Distinguished by 130 ft operating range, the SmartThings water sensor from Samsung is highly sensitive and designed to both control leaks and help you maintain a healthy and favorable environment in your dwelling. It is supported by FCC/IC/CE certificates that ensure flawless operation within the whole service life.  

detailed parameters
Working Method

Complex

Detection method

Spot sensor (2 probes on the front)

Connection and data transfer

Wireless Wi-Fi connection

Alarm

App alerts, Light-up or siren alerts (when abnormal moisture or temperatures are detected)

Power source

1 CR2 battery (included)

Dimensions

2.32 x 1.65 x 0.79 inches

Packaging

Water leak sensor, User manual

Warranty

1 year

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YoLink (YS7903-UC)

The Smartest System Overall

If you are new to smart home sensors and seek to install your first water leakage control system, the YoLink water sensors will be just a perfect start.

To put it right, you’ll get a complete system including 4 wireless water sensors, a YoLink hub, and a quick-start guide to set it up without a problem even if you are new to this sort of device. So, you can start using it straight out of the box, with no added tools required. Powered by two AAA batteries (also included in the set), the sensors actually need no installation and can be placed pretty much anywhere where you need leakage control, be it sinks, washing machines, water heaters, fish tanks, sump pumps, etc.

Connected and managed via the YoLink hub and the YoLink app on your smartphone, these sensors make up an independent system that can function on its own. On the other hand, easily pairing with ZigBee, Z-Wave, and many other most popular smart home protocols, it can also be integrated into your existing smart home system. In case of leakage detection, the sensors will send you app alerts or push smartphone notifications. In addition, you are also free to activate a siren alarm.

Yet, the smart abilities of the YoLink water sensor system don’t end here. While supporting as many water sensors as you need, the YoLink hub also allows integrating other smart sensors, thus, giving you an opportunity for expansion and creating a whole smart home system from the ground up. And you’ll be able to check and monitor all your connected devices in a single app. Other than that, the system can work with Alexa, giving you an added ability to interact with other smart units and use automated actions. And the cherry on top, you also have an opportunity to cut off the water or gas in case of leaks by incorporating an optional YoLink control valve into the system.

Review of YoLink (YS7903-UC) Wi-Fi Smart Leak Sensors (4-Pack, Hub Included)

Distinguished by a Long Reach

As smart and functional as it is, the YoLink water sensor system has something more to offer. Namely, it is an impressively long coverage range, which is considered one of the longest in the industry as compared to other smart sensors of this kind. Thus, the operating distance reaches up to 1,000 ft in the open area and up to 328 ft indoors that makes this model a perfect match for bigger properties and multi-floor households. Another good thing is, a signal boasts perfect wall penetration. Hence, you can confidently put these sensors in the basement, free-standing garage, shed, remote outbuilding, and any outdoor area where most other smart sensors will fail.

Such a long wireless reach is ensured by a specific LoRa technology that uses proprietary radio frequency instead of Wi-Fi network. In addition to long operation range, it provides reliable system operation not dependent on the Wi-Fi network and works to minimize power consumption for longer battery life.

That said, with the YoLink water sensors, you’ll get a comprehensive leakage control system that will need minimum maintenance and deliver flawless operation to keep you instantly informed on your water sensors status as well as leave enough space for expansion.

YoLink (YS7903-UC) Wi-Fi Smart Leak Sensors (4-Pack, Hub Included) in the use

Additional Info

    Manufacturer

Last updated price $79.99
Stock In stock
ASIN B084WYB8PM

 

Govee (B5040101)

Solid Leakage Detection

Are you on the lookout for a simple yet reliable solution that will protect your home from the risk of water damages from inside? If so, the Govee water sensors have a lot to offer in this concern and, what is not less important, come at a fairly honest price that won’t hit your budget too much.

First and foremost, in a set, you’ll get three sensors, which might be enough to cover some critical spots in a smaller apartment. Each Govee water leak detector is smartly shaped and compact enough to fit into pretty much any area exposed to the potential risk of leaks. So, whether you need to place it next to the sink or squeeze under the faucet, it will fit just fine. A distinct feature of these wireless water sensors is that they come in two types. Two out of three detectors have water probes on the bottom to quick-spot ground level and area leaks while one sensor is designed with a probe on the top and works to detect splashes and dripping pipes. With the latter, you’ll be able to diagnose some minor failures in advance to prevent them from growing into a more serious problem that might cause more extensive damage.

Notably, Govee sensors are very sensitive and will start sending alerts to your smartphone long before the disaster becomes inevitable. Thus, you can rest assured you’ll have enough time to solve the problem. More than that, apart from app notifications and email messages, each sensor has a built-in sound signal. Thus, even if your Wi-Fi network lies flat for some reason, these little water guards will produce ultra-loud 100dB alarms to let you clearly know where the problem is.

Review of Govee (B5040101) Wi-Fi Smart Water Sensor (3-Pack)

No Fuss Setup

As you might have already guessed, the Govee sensors provide Wi-Fi connectivity. Yet, unlike many other models you have to pair with your smartphone directly, these are a real snap to set up. The whole secret is in a small gateway that comes in the package along with sensors and serves as a bridge between detectors and your Wi-Fi router. Thus, you’ll have to link the Govee gateway to the router once by pressing the pairing button and following the app prompts to get an opportunity to further integrate up to 10 sensors into your home system. Not only do water detectors smoothly pair with the gateway in mere seconds, but also the bridge enhances the wireless signal transmission and ensures a more solid connection for quick and opportune alarms transfer.

While the sensors are battery-powered, the gateway can be plugged directly into the mains to stay constantly “online” and notify you both of leaks and of low battery charge so that you can replace drained batteries on detectors in time.

To cut a long story short, the Govee water sensor bundle is a solid and functional leakage control system that will help avert unwanted water damage in a private house or rented apartment and will save your peace of mind when away from home.

Govee (B5040101) Wi-Fi Smart Water Sensor (3-Pack) in the use

Additional Info

User Manual     Manufacturer

Last updated price $52.99
Stock In stock
ASIN B07J9HZ5VN

 

Shonmau (SNT921W)

Simple and Versatile at the Same Time

What makes this water sensor from Shomnau stand out is that it is amazingly simple and surprisingly versatile at the same time. Sounds somewhat strange and controversial? You’ll get it as soon as you have this sensor.

With no added cabling, fancy installation, and gateway or bridges needed, this little gem is extremely easy to setup. It connects directly to your Wi-Fi network and pairs with the Tuay app you can download for free from PlayMarket or Apple Store. Just add your water sensor to the app and link it with your home Wi-Fi system following foolproof instructions in the QuickStart guide you’ll get along with the sensor. A built-in rechargeable battery will keep the sensor smoothly running for about six months before a recharge is needed and save you from buying any replacement batteries.

The app is fairly intuitive and available for all operating systems. It allows connecting as many sensors as you need, so you can eventually build up an extended water control system and put a sensor in each and every spot where the leakage is possible. In view of a low price tag, it won't cost you too much but will save you a lot in the long run.

Thanks to the slim design, the Shonmau sensor can be placed pretty much anywhere to ensure solid water detection while staying out of sight. Besides, unlike models with probes on their tops or backs, this sensor features a probe attached to the cable. Such design allows not only for detecting leaks but also for controlling the water level. What's more, even when fully plunged into the water, the probe remains operable, thus, you can set it in any utility room and even place it next to the sink or bathtub, behind the fridge or under the heater, or use it to check the water level in a pool, aquarium, fish pond, etc. At 5.9 ft cable length, the model provides a decent reach and can be easily installed in tricky spots.

Review of Shonmau (SNT921W) Wi-Fi Smart Water Sensor

Stay in Touch No Matter What

To let you know about the leakage issue, the Shonmau sensor can use a number of ways. Once it detects water where it shouldn’t be or the water level under control goes above the set mark, the unit will produce an 80dB sound alarm you can turn off in the app and send a push notification to your phone within 2-10 second, depending on your Wi-Fi network speed. So, you’ll have time to take measures for tackling the problem and prevent greater loss.

On top of that, apart from free reminders, all dependant on the Internet connection, the Tuay app also provides paid SMS notifications and voice calls, which is a great option if you are out of Wi-Fi range and have no Internet connection for some reason. This function is available at just $2 a year that is not big money at all.

All things considered, the Shonmau water sensor is a simple and affordable unit that offers versatile use and will enable you to track the leakage alerts whatever the situation and wherever you are.

Shonmau (SNT921W) Wi-Fi Smart Water Sensor in the use
Last updated price $22.99
Stock In stock
ASIN B07WD47L4Z

 

D-Link (DCH-S161-US)

On the Guard of Water Damages

Home floods caused by sump pump failures, leaky sink, or busted washing machine are something everyone is afraid of and want to avoid. Although no one is 100% protected against unexpected accidents, you can avert the worst, with a good water sensor at hand, like the one from D-Link.

The model is yet another device for leakage detection and water immersion control. It is distinguished by its compact dimensions measuring just 2.7 x 2.7 x 1.2 inches. Thanks to the smaller size and thinner profile, it is much easier to install this sensor behind appliances while special mount holes make it easy to attach it to the wall for seamless installation in some tricky environments. Moreover, this sensor comes with a 5.9 ft cable that provides a good reach and can be extended by using a 3.5 mm three-ring adapter cable. Doing so can be necessary for reaching out some hard-to-get or restricted areas with the risk of leakage exposure. So, whether you need to keep an eye on your dishwasher, water heater, or kitchen sink or want to make sure your basement, attic, or shed is dry after rain showers or snow melts, the D-Link sensor is the device you need.

To set up the sensor, you just need to download the mydlink app to your smartphone or tablet and connect the detector to your home Wi-Fi network, with no hub or gateway required. The sensor probe is extremely sensitive and finely detects both drips and shallow leaks. It will trigger a 90dB siren and send you an alert almost immediately after detecting the slightest water exposure. More than that, the D-Link water detector supports IFTTT applets it can use to connect to other smart devices via the mydalink. It means this little pal is able not only to detect water danger but also to prevent the damage by turning off the fixtures and faucets via smart plugs or smart valves.

Review of D-Link (DCH-S161-US) Wi-Fi Smart Water Leak Sensor

Set-and-Forget Convenience

Similar to many other wireless water sensors, the D-Link detector is powered by ordinary AA batteries that are included in the set, yet they will still need replacement at some point. However, unlike other models that run up to 6 months until battery replacement is needed, this sensor can smoothly operate up to 1.5 years. So, you can literally set it and forget about it. To make that possible, the unit conserves the battery power by going into a sleep mode. That said, it doesn't turn off completely. In case the unit detects water, the sensor wakes up immediately automatically reconnecting to the network and sending you an alarm.

To conclude, an easy-to-install and really smart D-Link water sensor will securely stand on the guard of water damages in your home. It will perfectly work not only to detect leaks but also to cut off the source of leakage.

D-Link (DCH-S161-US) Wi-Fi Smart Water Leak Sensor in the use

Additional Info

    Manufacturer

Last updated price $49.99
Stock In stock
ASIN B07NDNF484

 

Samsung (GP-U999SJVLCAA)

Little Goes a Long Way

When it comes to smart devices, Samsung is a reputed brand that holds the lead in this industry. So, if you already have a SmartThings hub from Samsung or plan to get one to give your home a brain and start a smart home system, this SmartTings water sensor will definitely catch your fancy.

The first thing you can’t but like about this water detector is that it is fairly affordable. Now, you do need to additionally invest in a hub to operate it but the whole system will quickly pay you off anyway. For one, the SmartThings hub allows connecting as many water sensors as you want, and for two, it allows connecting other Samsung smart devices as well, which are on average much more affordable than similar units from other brands.

The sensor pairs with the hub in close to no time and easily builds into a whole smart home ecosystem, expanding your options far beyond just water detection. Thus, you can connect your other smart devices to this hub and control all of them via the same app. At the same time, you can also choose a different operation scenario for each and every sensor in the system and program them to cut off the source of leakage once it is detected. Thus, the sensor can be adjusted to turn off the broken faucet or switch off the main water valve in case of a burst pipe.

Speaking of alerts, this water sensor doesn’t have its own sirene, and neither does the hub. So, you’ll have to rely only on notifications and reminders sent to your smartphone. Having said that, the added capabilities of the SmartThings platform somewhat make up for that minor flaw - you can set the sensor alarm to sound via speakers or make it visible by means of flashing lights. Besides that, the system allows for IFTTT configuration to receive alerts via emails or integrate with other smart home products.

Review of Samsung (GP-U999SJVLCAA) Smart Things Water Leak Sensor

More Than a Water Sensor

Apart from smart functionality, this wireless water leak sensor from Samsung also boasts a smart design. It comes with two pairs of water probes on its back and top which means the detector is able to both spot leakage and monitor for minor drips and splashes. And thanks to its streamlined construction and extremely compact dimensions, you can put it literally anywhere - it will fit behind the fridge, in between the pipes, or under your washing machine like a glove.

A solidly operating and reliable water sensor, this model has some more little frills to offer. Specifically, it can also be used to monitor temperature raises and drops and humidity changes to help prevent frozen pipes and appliances overheats as well as help you maintain a favorable environment in your dwelling.

To sum it all up, if what you need is a simple-to-use water sensor that would have big functional potential and good configuration and connection abilities, the SmartThings water sensor from Samsung can be the best deal. 

Samsung (GP-U999SJVLCAA) Smart Things Water Leak Sensor in the use

Additional Info

    Manufacturer

Last updated price $0.00
Stock May be out of stock
ASIN B07F951JDP

 

What Is a Water Sensor?

Everyone wants to secure their homes from the damage that emergency situations like fire or water leakage may cause. Nowadays, you can find a great number of useful devices designed for this very purpose. For example, smoke detectors are used for preventing fire spread and allow for quick fire extinguishing. Likewise, water sensors will enable you to promptly tackle water leakage and save your home from more serious problems. Their main function is to detect a water emergency in the controlled area where there shouldn’t be any water and alarm you about it. With the help of such a useful device, you can protect your property from unwanted damage and save om repair works you were just not going to do.

For customers who want to turn their house into a smart home, we'd also recommend buying a complete security system to protect your family from criminal invasion and your property from theft and smart plugs that will help you not only create your individual lighting scenarios but also control your home lights in a more convenient manner.

What Features to Compare

Operation

The first thing to do before buying a water sensor is to decide where and in what conditions it will be applied and only then choose the model. We can separate sensors by the area they cover and their features. Thereby, there are models that detect liquid on a certain point and those that work in a wide area. Also, they can be either passive or active. The difference between the two is that a passive detector reveals the leak and informs you about it with a sound signal or via your smartphone. The active one, on the opposite, not only detects the flow but it can also control the equipment it is connected to. For example, it can turn off the power of a washing machine or a water-heating tank in case of leakage.

Alarm

The alarming method will vary with a model type. If your sensor is independent, it will inform you about the leak with a sound or a visual signal. Plus, it doesn’t require interconnection with other devices. On the other side, a complex sensor supports connection with your smartphone and other gadgets. In the event of a water leak, you will receive push-notifications even when being away from home. Keep in mind, some sensors connect to the local network via Wi-Fi, others need a router instead. These are the features that you should definitely check out to get the sensor suitable for you.

Ease of use

Furthermore, do not forget to consider the usability features. Sensor dimensions will be one of them. Some manufacturers produce very compact models that take very little space and look practically inconspicuous. Others may come in a bigger size and have a more distinguished design.

Consider the source of the power supply. Water sensors can work either from an outlet or run on batteries. Thus, if you don't have a suitable place to position a sensor with an outlet nearby, your choice should be a rechargeable sensor. If you've got enough outlets on the walls, we'd recommend you to opt for corded water sensors that provide non-stop run time without requiring batteries replacement.

FAQ:

Q: How many water sensors should I use?

A: It depends on how many and how big the areas you'd like to protect. Most often, water leak sensors are placed near or under washing machines, dish washers, water heaters, sinks, toilets, and other places where there is a risk of a water leak. If the area you want to monitor is quite wide, you can install a leak detector with a sensor cable, it covers a more extensive area. Some manufacturer offer sets of sensors, containing 2, 5 and 8 units for multiple locations. 

Q: How big the leak should be before the sensor detects it?

A: As a rule, a few ounces will be enough to activate the sensor. Some of the sensors detect humidity, so even lesser water will be enough. In any case, when installing the sensor, make sure that you position it close enough to the location where the leak might occur.

Q: How can I make sure that my water sensor is working?

A: Well, that is quite simple. You just need to moisten a towel and put it on or near the cable. In case you use a spot sensor with metal contacts, you can wet your fingers and touch the strips. In both cases, the sensor will start the alarm, when it is wet. If not, but you have followed all the instructions about its installation, we recommend you to address a support service.  

Q: How do I know there is a water leak in my house?

A: Well, with the exception of a water leak sensor that will let you know when the leak occurs, there are some indications for you to look for if you suspect such a problem. You may start worrying if you observe the next:

  • A drop in water pressure or flow volume
  • A rusty or dirty water 
  • An unexplained increase in your water bill.

Q: What causes leaks?

A: Actually, there are a lot of possible factors that may cause to a water leak. However, there are several most common causes, such as corrosion and deterioration of the plumbing, water pressure, shifting, accidental breaks, etc. Anyway, even if there is a small leak, don’t ignore it, since it will definitely grow into a bigger flood and will cause more problems.

Sources:

1. Lara Edge How to Prevent Water Damage, HouseLogic.

2. 10 Things You Must Know: Plumbing Leaks, DIY Network.

3. Water detector, Wikipedia.

4. Oliver Balch Plugging the leaks: how digital tools can prevent water loss, The Guardian. December 11, 2014.

5. How to Find a Water Leak in Your House, wikiHow.

6. Sherry Huang How to choose a Humidity Sensor? LinkedIn. January 7, 2016.

7. How Water Sensors Can Help Prevent Costly Water Damage, travelers.

8. 5 Smart Home Automation Safety Tips, travelers.

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Publish Date: 2017-07-28 16:48:14