Measure water use per pipe with up to four separate flow sensors. Choose sensors that match your pipes and the readings you need.
Check before you order. Choose at least one flow sensor and check thread, material and measuring range. Read the full check
One total figure says little when you want to know where your water goes. The WaterFlowKit v2 measures up to four points at once, shower, boiler, garden tap, including water temperature, live in Home Assistant and fully local.
The WaterFlowKit v2 gives you real-time insight into water usage and water temperature per measuring point. Each kit supports up to 4 water flow sensors.
The WaterFlowKit v2 supports WiFi, Ethernet and PoE. With the Thread firmware it also works over Thread, without WiFi and locally with Home Assistant through your Thread border router.
The sensors are ordered separately, so you can choose the correct size and material for your pipework. Each sensor includes a 1 meter connection cable and cannot be connected to the WaterFlowKit without this cable.
Available sizes: G1/2" (DN15), G3/4" (DN20), G1" (DN25), G1 1/2" (DN40) and G2" (DN50). View all sizes and applications.
Available in: Brass and Stainless Steel.
Brass: robust and affordable, suitable for most household applications.
Stainless Steel: food-safe, hygienic and recommended for drinking water or when extra durability is desired.
WiFi pre-installed by default:
The WaterFlowKit v2 is delivered with WiFi firmware by default. Prefer to use Ethernet? You can easily install the Ethernet firmware yourself via our firmware page. No different hardware is needed; the choice is entirely software-based.
Power supply:
The WaterFlowKit v2 can be powered via PoE when using a suitable PoE network connection, or via USB-C. PoE is not required; USB-C can always be used as an alternative power supply.
More information, applications and technical details can be found on the extended product page and in the manual.
Order the WaterFlowKit v2 today, with a 14-day cooling-off period you can buy with confidence.
Use WaterFlowKit v2 with Home Assistant, the SmartHomeShop cloud app or both at the same time. With compatible firmware, you can combine local dashboards and automations with remote access to your readings in our app.
With local ESPHome firmware, readings go straight to Home Assistant. No SmartHomeShop account or cloud subscription is required.
No Home Assistant needed. Open our cloud app in a browser on your phone, tablet or computer, even when you are away from home.
Cloud use requires an account, internet and cloud firmware that supports your model. Readings and features depend on hardware and firmware; history and usage limits depend on your app plan. With supported firmware, you can also use the app and Home Assistant together.
Connect up to 4 flow sensors in 5 pipe sizes, available in Brass and Stainless Steel: G1/2" (DN15): 1–25 L/min, ±3% accuracy G3/4" (DN20): 1–30 L/min, ±3% accuracy G1" (DN25): 1–50 L/min, ±5% accuracy G1½" (DN40): 5–150 L/min, ±3% accuracy G2" (DN50): 10–200 L/min, ±3% accuracy Temperature measurement available on G1/2" and G3/4" models (0 to +80 °C).
Water temperature: 0 °C to +80 °C with ±0.5 °C accuracy (on compatible sensors). Ambient temperature and humidity monitoring via built-in sensor.
Wi-Fi IEEE 802.11 b/g/n (2.4 GHz), supports WPA2/WPA3 security. Ethernet (RJ45) with Power over Ethernet (PoE) support for a stable wired connection. Thread via the built-in IEEE 802.15.4 radio, with the Thread firmware and a Thread border router.
92 x 47.5 x 26.5 mm (main unit)
USB-C power cable: 3 meters Sensor cable: 1 meter per sensor (detachable connectors on both ends)
USB-C port for power supply (5V, 1A) with included adapter (if chosen). Power over Ethernet (PoE) for combined data and power via a single cable.
IP52 for sensors (protection against dust and light moisture). IP20 for the main unit (suitable for indoor use).
-10 °C to +40 °C for the main unit.
Fully integrated with Home Assistant via ESPHome. Home Assistant Energy Dashboard compatible. Over-the-air (OTA) firmware updates. With the Thread firmware it also works over Thread; you install it with the ESPHome Device Builder.
WaterFlowKit main unit Selected flow sensors (with temperature measurement if chosen) USB-C power adapter and cable (if chosen) Quick start guide
Experiences with this product family. Versions and selected accessories may differ.
Pas encore tout installer, mais tout semble de bonne qualité. La commande est vite arrivé.
Netjes product doet wat het moet doen
Fast delivery and everything worked right away. The WaterFlowKit has become a valuable addition to my smart home.
Excellent kit. The combination of flow and temperature per pipe is exactly what I was looking for for my energy monitoring.
Overall experience Shopping is good. Product works fine. But i would be better if the connector cables are delivered with the ESP Board and not with the Sensors. I had already own Sensors and could‘nt connect them out of the box
Product is good, but I sent a few messages on DIscord and via email and never received a reply. I ordered the WaterFlowKit and then I immediately discovered on the github repository that a v2 was coming out in days, asked to cancel the order to wait for v2 instead after some days v1 was shipped.
The product is nice, the only 'but' was that buying tow devices together, they came with different versions of the software installed. and i they where working differently (and i had to upgrade the software, easy but unexpected)
Simple to mount and immediately usable data. Truly a recommendation for anyone who wants to monitor their water flow.
Fine product with reliable measurements. The manual could have been more detailed on a few points, but otherwise nothing to complain about.
The WaterFlowKit has been running flawlessly for a few months now. I use the temperature measurements for my underfloor heating.
Accurate, stable and well documented. For a DIYer like me a perfect addition to my setup.
Happy with it! Works seamlessly with Home Assistant and the insights really help us lower our consumption.
Ideal for mapping the water consumption of individual appliances. The flow and temperature data together give a complete picture.
Good kit and it does what it promises. Delivery took a bit longer than expected, but the product itself is fine.
Easy to install and immediate data. The documentation is clear and the community is helpful.
With the WaterFlowKit I discovered that our boiler used far more than expected. Adjusted it since and it really makes a difference.
Solid build quality and reliable data. After months of use still not a single glitch.
Very satisfied. The temperature measurement per pipe gives just that extra insight I needed for my automations.
Great kit! The real-time graphs in Home Assistant are addictive to watch and have already saved me water.
Sleek design and easy to integrate into ESPHome. I now track the consumption of my entire water circuit.
Works well and the measurements are accurate. Calibrating it took me some puzzling, but after that it does exactly what it should.
I use the kit to monitor my heat pump. The data is stable and reliable, exactly what I was looking for.
Accurate flow measurements and the temperature sensor works fine. A nice product for anyone who wants to seriously monitor their water consumption.
I can finally see how much hot water the shower uses. Very handy for being more conscious about it. Recommended!
The WaterFlowKit gives me insight into both consumption and temperature per pipe. Installation was a breeze and everything came in neatly in Home Assistant.
An excellent product for tracking water consumption. The real-time updates help me stay on top of my usage.
I use the WaterFlowKit to monitor the water consumption of my toilet how many liters it uses and it works perfect.
This device delivers detailed water data, and its sleek design fits perfectly into my home setup.
A reliable and efficient tool for monitoring water flow. The temperature readings are particularly useful.
I love the clarity of the data provided by the WaterFlowKit. The insights have noticeably reduced my water bills.
At the moment I use the WaterFlowKit to calculate the coefficient efficiency of my heat pump.
It provides precise measurements and is very intuitive to use. An essential tool for managing our water consumption.
A must-have for anyone who wants to monitor water flow in their home. The detailed statistics are excellent.
The WaterFlowKit measures water usage and tap temperature with precision. Real-time monitoring helped me save water.
I am impressed by the accuracy of the WaterFlowKit. Tracking both water usage and temperature per tap gives great insight into our consumption.
I was always curious about the actual water usage for showering, washing, etc. With the WaterFlowKit I can see it precisely and optimize accordingly. A real eye-opener and a smart investment.
Vlotte fysische installatie van de waterdebietmeter.
Ook de integratie in Home Assistant verliep vlekkeloos.
GooglePerfecte ervaring, reageert snel op vragen.
Ik had de waterflowkit V1 besteld maar deze was er niet meer en hierdoor heb ik de versie V2 besteld, en deze werd volgens afspraak geleverd.
Zal zeker regelmatig op de website terugkomen om te kijken of er producten beschikbaar zijn die ik kan gebruiken voor Home Assistant.
GoogleThe WaterFlowKit is designed for easy installation. You can attach it to the water line of your choice, such as the kitchen or bathroom faucet. Attach the provided flow sensors to the pipeline and connect the kit to your Home Assistant system.
Yes, the WaterFlowKit supports up to four flow sensors. This allows you to monitor water usage at multiple measuring points in your home, for example hot and cold water or different floors.
You need suitable flow sensors, power and a network connection. Choose Home Assistant for local dashboards and automations, or our SmartHomeShop app with supported cloud firmware, an account and internet. Ethernet and PoE require matching firmware; PoE needs a PoE switch or injector.
The WaterFlowKit not only measures water consumption in liters per minute, but also the water temperature as it flows through compatible sensors. The main unit also measures the temperature and humidity of the room where the kit is located.
The WaterFlowKit supports WiFi, Ethernet and PoE, plus Thread with the Thread firmware. Over Thread it talks to Home Assistant locally through your Thread border router, without WiFi or a cable. For the SmartHomeShop app, choose the WiFi or Ethernet firmware.
You get a 2-year warranty on the WaterFlowKit and on the separate flow sensors. Keep your proof of purchase and report a fault through our support portal, and we will find a suitable solution together.
Yes, with the WaterFlowKit you can set up notifications in Home Assistant based on custom water consumption thresholds, allowing you, for example, to receive alerts when unusually large amounts of water are consumed.
Yes, you can view and analyze historical data of your water consumption over days, weeks, months, and years in Home Assistant, providing insight into your water consumption patterns.
Yes, the WaterFlowKit is suitable for both cold and hot water lines and can measure the water temperature as it flows through the sensors.
The WaterFlowKit is designed for indoor use and is not recommended for outdoor use where it could be exposed to extreme weather conditions.
No. Like Zigbee, Thread uses the 2.4 GHz band, but it is a different protocol. You don't pair the WaterFlowKit as a Zigbee device; it connects through your Thread border router.
Yes. With the Thread firmware you need neither WiFi nor a cable: the kit talks to Home Assistant locally through your Thread border router. You need a Thread border router (for example Home Assistant with a Connect ZBT-1 or SkyConnect) and the ESPHome Device Builder; the first installation happens over USB-C. If you want to use the SmartHomeShop app, choose the WiFi or Ethernet firmware.
Choose your delivery country and currency at the top of the page. Available shipping options, costs and payment methods appear at checkout. Import VAT and customs handling charges may apply outside the EU. The stock status beside the order button gives the current dispatch estimate, not a guaranteed international delivery date.
Ask us about compatibility and connections before ordering. For help after purchase, returns or repairs, create a support ticket with your order number and follow the return instructions.
Ask for product advice