Measure your water consumption in real-time in Home Assistant

Gain insight into your water usage per minute and monitor your water consumption per hour, day, month and year in Home Assistant. The updated hardware is also prepared for Thread/OpenThread; the standard installation remains via WiFi.

Home
Requires Home Assistant
Thread/OpenThread ready
Does not work standalone

Discover the WaterMeterKit: A carefully crafted Dutch creation, fully developed and designed for your needs.

Specially designed for Home Assistant & ESPHome: The WaterMeterKit works locally over WiFi and is prepared for Thread/OpenThread for users with a suitable Thread network.

Real-time water insights

Convert your analog water meter to a digital version

Make the switch to digital with the WaterMeterKit: Convert your analog water meter and gain real-time insight into your water consumption. Monitor precisely how much water you use during daily activities such as bathing, handwashing, and showering.

Douche
Toilet
Wasmachine
Vaatwasser
Kraan
Bad

Analog water meter (live)

Realtime

Installation examples — Easy to mount in under 1 minute

Below you'll find 3 example installation videos for popular water meter types. Our universal holder works with many more brands — see the compatible water meters list below for a complete overview.

Type 1 — Itron / Actaris / Schlumberger
Type 2 — Sensus
Type 3 — Elster / Honeywell

Compatible water meters

Our universal holder fits most European analog water meters. Below you'll find the most common types per brand.

Not sure if your water meter is compatible?
Send us a photo or chat live (7 days/week) on Discord.
sensus620.png
Sensus
itron.png
Itron
elster.png
Elster Kiwa
itron.png
Schlumberger
honeywell.png
Honeywell
itron.png
Actaris
diehl.png
Diehl
zenner.png
Zenner ETDK ZR
zenner2-1760090131.png
Zenner ETWD
zenner3.png
Zenner ZR
dh-metering.png
DH Metering
elster2.png
Elster
hidroconta.png
Hidroconta
maddalena.png
Maddalena Plus C
madalena-mvm.png
Maddalena MVM

Different water meter brand?

Our sensor detects the metal rotating disc in analog water meters. This small metal disc (often silver-colored) rotates when water flows through. The sensor registers each rotation via magnetic detection = 1 liter of water. ⚠️ No rotating metal part? Then our sensor won't work.

Not sure if your water meter is compatible? Send us a photo!

INSTALLATION

In 3 steps — within 2 minutes

Mount holder, connect power/network and pair with Home Assistant.

1

Place the universal holder

Clip the universal holder onto your water meter. Fits most European analog meters.

2

Connect: USB-C (realtime) or Ethernet with PoE

Choose your power/connection and start measuring instantly.

3

Add to Home Assistant

Open Home Assistant > Settings > Devices & Services > Integrations and finish setup.

Open Source

Open source firmware with ESPHome

Full control over your WaterMeterKit with open configuration, local data, and direct Home Assistant integration.

Fully open source

All firmware and configuration live on GitHub. You can adapt it directly to your own setup.

Built on ESPHome

Stable real-time data with OTA updates and native Home Assistant support.

100% Local

Your data stays inside your own network, without cloud dependency.

View on GitHub
smarthomeshop/watermeterkit
watermeterkit.yaml
# WaterMeterKit ESPHome Configuration (packages)
substitutions:
name: watermeterkit-587c20
friendly_name: WaterMeterKit 587c20
packages:
smarthomeshop.watermeterkit: github://smarthomeshop/watermeterkit/watermeterkit-v3/watermeterkit-complete.yaml@main
esphome:
name: ${name}
friendly_name: ${friendly_name}
api: # encryption key lokaal instellen
wifi: # ssid/password via secrets
Open Source

Customer Reviews

Customer Review: WaterMeterKit

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Frequently Asked Questions

Got questions?

Find answers to the most frequently asked questions about the WaterMeterKit.

In most cases, yes. The Watermeterkit is designed to fit most common analog water meters from well-known brands. We recommend always checking our list of compatible water meters, currently, we support: Actaris, Elster, Honeywell, Itron, and Sensus.

Installation is simple. Place the provided adapter on your water meter, connect the kit to wifi, and Home Assistant will automatically detect the device.

Absolutely. With the Watermeterkit, you can track your water consumption by the hour, day, month, and year and compare it in clear charts.

Yes. The updated hardware is prepared for Thread/OpenThread. For normal use, WiFi remains the standard and recommended installation. Only use Thread/OpenThread when you have matching firmware, a Thread border router and Home Assistant configuration.

No. Thread uses the same 2.4 GHz radio technology as Zigbee, but it is a different protocol. You do not pair the WaterMeterKit V3 as a Zigbee device.

Certainly! The Watermeterkit provides real-time insight into your water consumption, allowing you to see how much water you use in daily activities directly.

The Watermeterkit works seamlessly with Home Assistant. You can monitor and manage your water consumption through this popular smarthome software.

No, the installation is designed to be simple. The included instructions will guide you step by step.

The WaterMeterKit V3 is prepared for Thread/OpenThread, but it is used via WiFi by default. OpenThread is mainly intended for users who deliberately use a Thread network and install firmware intended for that setup.

Yes. For a Thread network you need a Thread border router that connects your Thread network to your regular network and Home Assistant. Without such a Thread network, use the WaterMeterKit V3 via WiFi.

Still have questions?

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SPECIFICATIONS

Technical Specifications

Connection to Water Meter

Direct connection with a universal holder that mounts the water sensor on the 1-liter metal indicator of your water meter.

Network Connection

- Wi-Fi IEEE 802.11 b/g/n (2.4 GHz), supports WPA/WPA2 security.
- Prepared for Thread/OpenThread via IEEE 802.15.4 radio. This is not Zigbee pairing and requires matching firmware, a Thread border router and Home Assistant configuration.

Data Transmission

Water consumption update interval: Every 1 liter

Physical Dimensions of the Kit

92 x 47.5 x 26.5 mm

Cable Length

- USB-C cable: 3 meters for powering the WaterMeterKit (if chosen).
- Detachable WaterMeterSensor cable: 3 meters.

Power Supply

USB-C port for power supply (5V, 1A) with included USB adapter (if chosen)

Operational Classification

IP20 (suitable for indoor use)

Temperature Range

Operational from -10 °C to +40 °C

Compatibility

Compatible with all common water meters as indicated on our website; if in doubt, contact us

Software

Fully integrated with Home Assistant. Used via WiFi by default. Thread/OpenThread depends on matching firmware, a Thread border router and network configuration.

Includes

Universal water meter holder with screws for easy installation

WaterMeterKit
2 year warranty
Shipped worldwide