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Sense Guard Water Security Kit

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$undefined.00 /mo* suggested payments with months* financingApply Now
  • Detects pipe breaks, leaks, frost and high water consumption
  • Complete water security for your home – 24/7
  • Use with GROHE ONDUS app to monitor and control leaks
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Frequently Bought Together


Product Overview

The complete GROHE Water Security Kit includes the full family of GROHE Sense and Sense Guard water safety system in one handy transport toolbox. The innovative GROHE Sense water detector alerts you the moment unwanted water leaks appear with a pulsating red light and buzzer, in addition to an alert which is sent to your smartphone via the Ondus App. The GROHE Sense Guard water control system continuously monitors water pressure in the pipes, detects every anomaly from minor leaks to a major burst, automatically shuts off home water supply and sends alerts to your cellphone visa Ondus App.
  • Including:
  • 1 x GROHE sense guard 110-Volt with 1 in. connection (22503LN0)
  • 1 x GROHE sense wall mounting set with 1 in. connection (22603000) and 2 x mounting nuts with R3/4 in. connection
  • 1 x GROHE sense guard power extension cable (22521LN0)
  • 3 x GROHE sense battery powered including batteries (22601LN0)
  • 1 x GROHE sense extension set (22506LN0)

Info & Guides

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Product Depth (in.)
8 in
Product Height (in.)
13.5 in
Product Width (in.)
8 in


Alarm Type
Water Leak
Battery Size
No Additional Features
Number of Sensors Included
Pack Size
Power Connection
Power Options
Product Weight (lb.)
10 lb
Range (ft.)
Remote Access
Remote Access
Requires Hub?
No Hub Required
Smart Home
Smart Home Enabled
Smart Home Protocol
Voice Control Hub Required
No Voice Control
Works With
Proprietary App

Warranty / Certifications

Certifications and Listings
No Certifications or Listings
Manufacturer Warranty
2 Year

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

  • 4.8
    out of 11 reviews
  • 100% recommend this product
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Showing 1-11 of 11 reviews
Home water damage protection
Recived this in a promotional program. I have had two water heater failures in 8 years in this home. Both caused water damage. So when i saw this offered I got it. Took awhile and was told it wasn’t coming. Then it showed up. Made my day. I finnally contacted my plumber and now it is installed. I am on a well so mounted after pressure tank, filters and water softener. Being old school had a manual bypass put in just in case. It cost a bit but after I got it installed and set up, I tested the remote cutoff and it works. Also set a sensor down on damp concrete and it sent me a water senser alarm. I really thought the concrete was just dry as I had dried it off with paper towels but it was still damp enough to detect the moisture. Easy to say I feel a lot better with the Grohe Sense Guard in place. So for peace of mind if you haven’t had a leak or if you have and know the frustration of cleaning up and drying out your carpet or replacing it. This is for you. One leak and it will pay for it self.
    • Recommended
    I got the GROHE Sense Guard Water Security Kit for our little beach house, just to have peace of ...
    I got the GROHE Sense Guard Water Security Kit for our little beach house, just to have peace of mind when we're not there. The installation was a little more involved than I initially thought, but could get it done without calling the plumber. I like that the device will shut off the water supply if a leak or pipe burst is detected. It will then also alert us on our phones. The only small issue is that it shuts off the water when the automatic lawn sprinklers come on. I'm still working on a solution for this. I think if the sprinkler came on more slowly it would work, we'll see.
    • Recommended
    2 people found this helpful
    SENSE GUARD WATER SECURITY KIT Setup and installation will take a little bit of time but once you...
    SENSE GUARD WATER SECURITY KIT Setup and installation will take a little bit of time but once you get the hang of it it’s actually very straight forward. It's definitely larger than it seems in the picture, but it was no issue to install it on our water line. Minimum gallons per event and a rain timer are really about it that’s of any use. It does however work, and that’s what counts. I tested by fill a tub and half way in the water will be shut off, alarms triggered both visual and audible on the unit, and emails and notifications on your phone. That’s mainly what I wanted. If your pipe ruptures you will get some water damage without question but 20-30 gallons is a lot better than 1000 or more if left unchecked. Water consumption can be adjusted per your desirability. This kit come also with three hockey puck looking sensors that communicate with main device and you can place them in front or under device that use the water like dishwasher, washer, ice maker and so I also tested them by spilling some water on the floor and they work perfectly water off and I got the notification (the pucks operate on batteries). If you like to travel or if you have vacation home than this product is must have for you it will give you a peace of mind that everything in that place is good.
    • Recommended
    6 people found this helpful
    The grohe water sensor is a piece of mind for me. We get brutally cold weather in the winter. I...
    The grohe water sensor is a piece of mind for me. We get brutally cold weather in the winter. I have not had a pipe burst but if I am away from home I can be alerted if a pipe burst or water pressure. I would highly recommend a professional install the security kit. I tried taking s shot at this but my lack of experience with plumbing prompted me to call a pro. The app is very simple to use and will send you alerts to your phone,
    • Recommended
    The product was easy to install but the app set up was problematic. Once I had overcome this, the...
    The product was easy to install but the app set up was problematic. Once I had overcome this, the product works well for alerting when it detects water leaks around the home and provides peace of mind against water damage from broken pipes or leaky plumbing fittings. 1. Overview This kit includes a number of components: • A wired 110V wifi water controller which can automatically shut off the water supply in your home (You will need a nearby 110V outlet to plug this into) • Three battery operated wireless smart water leak detectors (AAA batteries included) • A low profile wireless smart water leak detector with 4’ extension to a mounting bracket • A 9’ extension cord for the 110V power adapter supplied with the water controller • Various brackets and screws to mount the above • A set of multi-language pictorial user guides Like most smart home devices, the system comes with a free to download/free to use cloud-based app from Grohe called ‘ONDUS’ that can be downloaded from the Google Play Store (Android) or the Apple Store (iOS). While the system gives you wifi control to switch the water supply in your home off if a leak or unusual water flow is detected, you will need to install it after devices like water filters/softeners so if the leak occurs ahead of the water softener/filter, then this controller won’t prevent that from flooding your home as it will only control ‘downstream’ faucets and pipes. The battery operated sensors can be placed anywhere around the home such as near washing machines, whole house water softeners/filters, under kitchen sinks, under bathroom cabinets etc. to sense local conditions around the home. The systems sensors and water controller (basically a wifi water flow meter) monitor the water usage in your home as well as other variables such as temperature and humidity and build up a picture of your water usage much like the latest home thermostats build up a picture of how you like the temperature of your home. When it detects something out of the usual, the app can deliver notifications to your mobile phone as well as by email and in extreme cases (such as detecting a burst pipe), it will automatically switch the water supply off. In the event of a power failure, the water controller will default to its open position so you don’t lose your water supply during a power outage. Along with monitoring the sensors, the sensors also communicate information to your cloud account such as water pressure, water usage etc. which can be helpful in detecting slow leaks such as a faulty toilet flush seal. 2. How to plan the installation Like a lot of smart home devices, the critical issue is the strength of your wifi signal where you plan to place the sensors which allows them to communicate with the cloud effectively so you will need to check these locations using a wifi signal strength app on your phone. If you have Poor or no wifi signal where you plan to install them, you will need to add a wifi signal booster to your home network for these sensors to work properly. You can also download the Grohe ONDUS app from the app store and use their ‘Plan’ feature to help figure out the optimal configuration. This generates a ‘Planning ID’ code that you can use when setting up the app however after answering the various questions, I got a congratulatory message with an empty Planning ID and a message that said ‘There has been an issue, please try again.’ Since the water controller is 110 Volt, you will also need a 110V outlet nearby. The water controller has a total of around 17’ of power cord to reach the nearest outlet. The water pressure needs to be between 14.5 and 72.5 psi, and the water controller needs to be installed downstream of (i.e. after) a water softener. The instructions also recommend installing a shut off valve immediately before the water controller. 3. Installation Before you start cutting into your plumbing, the first thing I recommend is to download the ONDUS app and set up your account. You can put the batteries in the sensors and plug the power into the water controller and connect them to the app and your home wifi. This is not the order that Grohe recommends however it can avoid a set up issue that I ran into (explained below). You just place the sensors in the area where you want to detect the leaks such as under a sink. There is a low profile sensor which allows you to place one under a washing machine. The water controller is set up to be connected to 1” water pipe. It comes with a set of screw on reducer adapters to be compatible with a ¾” pipe. This means that you will need a 1” female adapter or a ¾” female adapter (available at Home Depot). Since I prefer to reduce the number of threaded connectors, I bought a couple of 1” x ¾” copper reducers (from Home Depot) and soldered these into the 1” female adapters. I can recommend watching the installation video on the Grohe website as it makes performing the installation of the water controller simple. Once the pipe fittings are in place, you drop in the water controller, add a mesh filter on the inlet end and a washer on the outlet end and tighten the fittings with a wrench. You will need plumbers PTFE tape to wrap around the threads where the water connector attaches to the 1” female copper pipe fitting. While I am not a certified plumber, if you are proficient at soldering and have some basic tools like a blow torch, solder, flux paste and a pipe cutter, this is a job that you can do yourself after watching the Grohe video and reading the installation guide. 4. Set up Set up basically involves configuring the app with rooms around your home where you plan to place the sensors (in our case, laundry room, bathroom and kitchen) and then adding each sensor to your home wifi network. There is a paper manual for the water controller has a label which has the wifi password needed to connect it to your wifi network. The typing is quite small so take a photo of it with your phone and zoom the picture to make sure you’re not mistaking uppercase Os for zeros etc. in the password. Unfortunately, the label on the manual in my kit had the ID and password for a completely different water controller. I spent about an hour trying every permutation of the password only for it to fail to connect each time. I called Grohe’s customer support a couple of times and their advice was to double check that I was typing the password in properly, perform a factory reset and then to take the unit back to my local retailer for a replacement. The latter wasn’t easy since by that time I had removed a section of my home plumbing to install the valve and would have had no water! If you experience this issue, just press the two plastic buttons on each end of the water controller plastic cover and gently lift it up. On the underside is a white circuit board with a printed label – this has the correct SSID and password on it – use this password during set up. The wifi set up of the water controller didn’t quite work as explained in Grohe’s guide. The water controller is supposed to default into it’s wifi discovery mode for 5 minutes once the power adapter is connected to allow your phone’s wifi to find it so you can connect to it. I found that the connect button would default to orange when powered up and that you need to press the ‘Connection’ button on the top of the controller to get it into this wifi discovery mode. The top of the water controller will light up blue momentarily when it enters this mode and the ‘Connection’ button will be illuminated blue instead of orange. Once I had overcome these challenges, it was actually quite straightforward to add the water controller to my ONDUS home account and to set up and place the sensors around the home. It can take a few minutes between the process of completing the set up of a sensor on your phone and the corresponding icon appearing in your ONDUS app. I suspect this is because the app communicates with your ONDUS cloud account and then sends back a confirmation to your phone that the ONDUS account is installed on. I decided to use the low profile sensor near our whole house water filter/softener and our washing machine. The sensor comes with a wall mounting bracket so you can mount the main wifi sensor nearby using the 4’ extension cord. You can test each sensor by putting it a small amount of water on the floor and placing the sensor on it – it should emit a warning tone and then send a notification to your ONDUS app as well as an optional notification email to your email account. The notification explains exactly which sensor has been detected so you know exactly where the leak or issue may be occurring. 5. Using the app to monitor your home When setting up each sensor and the water controller, you can confirm whether the sensor is in a ‘wet’ or ‘dry’ area. The sensors are sensing temperature and relative humidity as well as looking out for water. For each sensor, you can see the remaining battery life in the app so you know when to replace the batteries and you can also adjust the temperature and relative humidity settings that can trigger a response. For the water controller, it is monitoring water pressure, system temperature and also water consumption (on a daily, weekly, monthly or 3 month basis). Whenever a sensor triggers a warning, it can automatically switch off the main water supply using the water controller. The app allows the water supply to be switched back on. To extend the system, you can just add new sensors wherever you need them.
    • Recommended
    2 people found this helpful
    Impressive, Useful Technology with some concerns, and jury is still out on long term performance ...
    Impressive, Useful Technology with some concerns, and jury is still out on long term performance I love the idea of this technology. After having a slab leak (slow pipe leak under the house foundation) that flooded the kitchen and ruined the hardwood flooring I’ve been watching this technology mature. It would have prevented the disaster by shutting down the water and warning me of the problem before it was able to cause damage. I plan to repost a review after 6-9 months of usage to report how it performs long term. The Grohe system uses two methods to detect water problems; local sensor leak detection and water line pressure drop detection. I placed the 3 sensors included in typical leak areas (kitchen sink, laundry room, water heater). I tested them by artificially introducing water on the floor and was immediately notified (via phone app & alarm) and the man valve closed stopping the leak. So works as advertised. Setup was relatively easy for me as I have main plumbing supply line exposed in my garage and nearby outlet for power to the device. If you main line is buried in the wall might not be as easy. I didn’t have too much difficulty with the phone app, registering the devices and getting operational. It appears they have had some growing pains with the app….lots of poor reviews on google play, but I think the version I downloaded has resolved many complaints. I also reached out to the support team (Ondus US team) and got a thorough response to a half dozen technical questions in 48 hours. Nice. So there are a few areas where the Grohe Sense could improve in my opinion. First I would like to see more emphasis on water tracking. The ability to see real-time usage and historical usage (i.e. this month vs last month or last year). The technology is already there, just need the app to improve. I’d also like to be able to have multiple accounts (i.e. husband and wife) notified when there is a problem. Currently you’d have to share a single account. I’d also like to be able to refresh all the sensor data. It appears (see photo) they update status only every 24 hours unless they report an issue. I also found a couple of bugs; the title page of printed instructions points you to a Grohe Sense webpage but the link redirects you to the Grohe homepage (they acknowledge the problem-say fix in works). The app occasionally locks up if you bring it up, switch away and switch back to it (you have to close it and restart-minor annoyance). The Grohe Sense water valve also has a fine mesh screen on the inlet that must be installed. They recommend you service the screen every two years. This is probably a plumber service call for most people and could cost a couple hundred bucks (valve has to be removed to service). Should be user serviceable. I also was not totally satisfied with the installation instructions. There are very few written instructions, most are pictures/drawings to appeal to an international audience. It’s OK, but ambiguous in spots. Also depicted in the instructions is a hardwired water sensor (using wall current rather than battery operated) but I’m told that product will not be available until mid-2020. As it is now, they predict batteries will have to be replaced in sensors yearly…which in my case means pulling the washer out to reach them. Overall I’m initially pleased with the product. The Grohe Sense system is not the only product out there (Flo, Phyn are other similar competitors) and this product kit is not cheap ($765 at the time of this review) and I will likely have to purchase a couple more sensors to complete my install ($60 each). But if I was to have a slab leak like before the product would instantly pay for itself. Right now I would rate it a B minus. Stay tuned for a long term update. About my rating: 5 stars – Exceeds all expectations. Better than the competition in all aspects, design, cost, operation, and support (A+). 4 stars – Nicely done. Better than the competition and solves the problem. (B) 3 stars – Works as expected. Has some shortcomings but gets the job done. Might be short in design, cost, longevity, or support. (C). 2 stars – Falls short of expectations and needs improvement. Pass and look elsewhere. (D) 1 star – Fails miserably. Does not get the job done, might even make things worse. Someone at the company should be fired. (F)
    1 person found this helpful
    This whole house water sensoring security kit by Grohe is a very important device for anyone that...
    This whole house water sensoring security kit by Grohe is a very important device for anyone that is away from their home for any sustained period of time or if you have a rental house, or vacation home. I was concerned about the installation into the main water line, 1" copper, but it was not difficult using the included bracket and coupling fittings. If you do not have experience working with copper pipe then you should call a plumber. After reading the instruction booklet and it stated several times that the system should be installed by a licensed, professional or all warranty would be void. I decided to call my friend who is s licensed electrician and plummer just to be sure all the work was done properly! The kit comes in a very nice sturdy latched case( which is nice to use for your tools, etc. after your system is installed) :) The kit comes complete with: 1 sense guard unit 110 volt w/ 1" connectors, 1wall mount with nuts and connections, 1 power extension cable, 3 sensors battery pwered with batteries and 1 extension set. The system alerts you when a water leak appears/ with a pulsating red light, buzzer,in addition to an alert sent to your cell phone threw the app... and shuts off the water supply to your home to protect from Damages! I did find it a little difficult getting the unit and app to connect with each other, but eventually it workd!
    • Recommended
    This water security kit is a must for people like us who travel quite often and for long periods ...
    This water security kit is a must for people like us who travel quite often and for long periods of time. In the winter, we can turn off the well but in the summer, we need the water to run the sprinkler system. This product monitors water flow and sends alerts to your phone in the event water usage spikes indicating a pipe has burst or other problem has occurred. It can shut down the water supply to minimize damage to your home. We had a plumber install this since my husband isn't that comfortable with plumbing projects but the instructions are really thorough and if you have plumbing experience, you could install it yourself. The individual remote sensors included in the kit allow you to monitor specific appliances such as the washing machine. This is a great investment in peace of mind whether you are traveling or not. Excess water can do tremendous damage in a short time!
    • Recommended
    The ability to constantly monitor and automatically shut off the water supply is eminently sensib...
    The ability to constantly monitor and automatically shut off the water supply is eminently sensible – every property should have that ability. In addition to the instruction booklet there are another five more instruction sheets and it looked like the installation and connection process could be complex. To find out I decided to do a dry run to connect the Sense Guard and the additional sensors and get used to the Ondus app. The app is used right from the outset to register and set up the Sense Guard system for a specific property. Other properties can be added together with additional Sense systems. The first problem I had was registering the Sense with the app. It kept saying I was using the wrong password – I was reading this information from the unique sticker on the instruction booklet … Wrong! Ignore that and only use the information on the stickers on each piece of hardware. Once I realized that connections were straightforward. It does say that only authorized Grohe fitters should do the installation but I am a confident, if amateur, plumber and fully intended to install everything myself. However, once, I saw that the products had a two year warranty with an additional 12 month warranty on genuine spare parts I decided not to risk all that and go down the authorized Grohe fitter route. The remote sensors are battery powered and can be placed anywhere within the property to alert the main unit to any anomalies. There is even an additional mini sensor which is small enough to fit into small places such as under a washing machine. All the main items light up in different colors to indicate different status conditions and that makes identifying a problem area very quick and easy. Even though I was a little intimidated initially by the complexity of the paperwork having worked through it all I feel much more confident and there are some great video tutorials on the Home Depot website and the Grohe website. Can’t wait for this to be installed and fully operational.
    • Recommended
    I have had a water line failure inside of my home and the damage it caused make this system well ...
    I have had a water line failure inside of my home and the damage it caused make this system well worth the price. I installed this security kit myself because i have experience with plumbing. The kit comes with all the hardware you need for installation. It uses lan to connect to your router using the Grohe Ondus app. The kit comes with three sensors which can be placed close to any appliance which have a water supply, and the sense guard which is installed on the water supply line. I like that this kit monitors my water usage, pressure, temperature and gives a warning when there is a water leak. The sense guard can be set to cut off the water supply in the case that a leak is detected. The instruction are straight forward and should be completely read and understood before you start your installation. It can be monitored remotely and the water supply can be cut remotely.
      • Recommended
      I bought my 15 year old home a bit more than a year ago and a few months ago I've got an irrigati...
      I bought my 15 year old home a bit more than a year ago and a few months ago I've got an irrigation pipe bursted. The water ran off entire morning until my neighbor bang my door to wake me up from the bed and let me know. This sensor is absolutely a peace of mind. Hopefully, nothing will ever happen again. My city water pressure is very high which is the main reason why the pipe was burst in the first place. The water regulator is not help much as well since the water is extremely hard and the rubber will go bad every so often. This Ghore sensor can tell me if the water pressure goes high and I should replace the water regulator as well which is a big plus in case I forget to check that manually.
      • Recommended
      Showing 1-11 of 11 reviews