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70,00€ incl. 21% VAT
57,85€ excl. VAT
An unexpectedly high energy bill? A tap or pipe silently leaking on? With the WaterP1MeterKit V4 you see your water and energy consumption live in Home Assistant or in the free SmartHomeShop app, so you stay ahead of surprises.
Two measurements, one device: the kit reads your smart energy meter through the P1 port and your analogue water meter through the included sensor. Thanks to the detachable water sensor you choose whether to read only energy, only water, or both at once. The updated hardware supports WiFi, Ethernet and PoE and is prepared for Thread/OpenThread. The extra expansion port optionally connects a water leak sensor or door sensor.
Imagine: live graphs of every litre and every kWh, automations that warn you about unusual consumption, and an alert the moment water leaks anywhere, before any damage is done. If you choose Home Assistant, everything stays inside your own home, no account or monthly fees. And the sensor clicks onto your water meter in under a minute, no plumber needed.
Standard WiFi pre-installed:
The WaterP1MeterKit V4 comes standard with WiFi firmware. Would you prefer to use Ethernet? You can easily install the Ethernet firmware yourself via our firmware page. No other hardware is needed; the choice is entirely in the software.
Power supply:
The WaterP1MeterKit can be powered via PoE if you use a suitable PoE network connection, or via USB-C. PoE is not required; USB-C can always be used as an alternative power supply.
Firmware flexibility:
You can switch between WiFi and Ethernet firmware at any time. This way, you always use the connection method that best suits your situation.
Additional expansions:
The V4 offers an optional port for a water leak sensor or door sensor (sold separately). This makes the WaterP1MeterKit an even more versatile tool for your smart home.
Order the WaterP1MeterKit V4 today, with a 14-day cooling-off period you can buy with confidence.
An unexpectedly high energy bill? A tap or pipe silently leaking on? With the WaterP1MeterKit V4 you see your water and energy consumption live in Home Assistant or in the free SmartHomeShop app, so you stay ahead of surprises.
Two measurements, one device: the kit reads your smart energy meter through the P1 port and your analogue water meter through the included sensor. Thanks to the detachable water sensor you choose whether to read only energy, only water, or both at once. The updated hardware supports WiFi, Ethernet and PoE and is prepared for Thread/OpenThread. The extra expansion port optionally connects a water leak sensor or door sensor.
Imagine: live graphs of every litre and every kWh, automations that warn you about unusual consumption, and an alert the moment water leaks anywhere, before any damage is done. If you choose Home Assistant, everything stays inside your own home, no account or monthly fees. And the sensor clicks onto your water meter in under a minute, no plumber needed.
Standard WiFi pre-installed:
The WaterP1MeterKit V4 comes standard with WiFi firmware. Would you prefer to use Ethernet? You can easily install the Ethernet firmware yourself via our firmware page. No other hardware is needed; the choice is entirely in the software.
Power supply:
The WaterP1MeterKit can be powered via PoE if you use a suitable PoE network connection, or via USB-C. PoE is not required; USB-C can always be used as an alternative power supply.
Firmware flexibility:
You can switch between WiFi and Ethernet firmware at any time. This way, you always use the connection method that best suits your situation.
Additional expansions:
The V4 offers an optional port for a water leak sensor or door sensor (sold separately). This makes the WaterP1MeterKit an even more versatile tool for your smart home.
Order the WaterP1MeterKit V4 today, with a 14-day cooling-off period you can buy with confidence.
Want the full story? The official product site shows everything: installation, features and FAQs.
Use the free SmartHomeShop App, connect everything to Home Assistant, or do both. Your choice.
One app for all your SmartHomeShop kits.
Every one of our kits is built for Home Assistant.
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.
Our universal holder fits most European analog water meters. Below you'll find the most common types per 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!
Compatible with DSMR 2.x, 3, 4 or 5 energy meters with a P1 port. Check if your meter has a P1 (RJ12), with P1 you’re good.
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Translated from Dutch Original (Dutch)
- Water meter: Direct connection with a universal holder for mounting the detachable water sensor on the 1-liter metal indicator of the water meter.
- Energy meter: RJ12 port for direct connection to DSMR-compatible energy meters.
- Wi-Fi IEEE 802.11 b/g/n (2.4 GHz), supports WPA/WPA2 security.
- Ethernet connection with support for Power over Ethernet (PoE) for a direct and stable network connection.
- 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.
- Water consumption update interval: Every 1 liter.
- Energy consumption update interval: Every second for real-time insight.
92 x 47.5 x 26.5 mm
- RJ12 cable for energy meter: 2 meters.
- USB-C cable for power: 3 meters.
- Water sensor cable: 3 meters with detachable water sensor.
- USB-C port for power supply (5V, 1A) with included USB adapter (if chosen).
- Alternative power supply via PoE for an integrated solution without additional power cables.
IP20 (suitable for indoor use).
Operational from -10 °C to +40 °C.
Compatible with DSMR versions 4.0 and 5.0 for energy meters and with all common water meters as listed on our website; contact us if you are unsure.
Fully integrated with Home Assistant. Ships with WiFi firmware by default; Ethernet firmware can be installed via our firmware page. Thread/OpenThread depends on matching firmware and network configuration.
- Detachable water sensor with 3-meter cable.
- Universal holder with screws for easy installation on the water meter.
- RJ12 cable for DSMR energy meter.
- Quick Start Guide.
The WaterP1MeterKit V4 combines water and energy monitoring in one device. You can read only your smart meter, only your water meter, or both at the same time. The V4 supports WiFi, Ethernet and PoE, has a detachable water sensor with a 3-meter cable and includes an extra expansion port for a water leak sensor or door sensor.
In daily use the V4 works like the V3, but it uses updated hardware that is also prepared for Thread/OpenThread. For normal use, WiFi, Ethernet and PoE remain the most practical options. The detachable water sensor, P1 connection and extra expansion port are still included.
Yes. The V4 shows your water and energy usage in real time in Home Assistant. You can choose to use only the P1 connection, only the water sensor, or combine both for a complete overview.
The V4 is designed for DSMR smart meters with a P1 port and most common analog water meters in the Netherlands and Belgium. If you are not sure, check the compatibility list or contact us with a photo of your water meter.
No. Thread uses the same 2.4 GHz radio technology as Zigbee, but it is a different protocol. You do not pair the WaterP1MeterKit V4 as a Zigbee device. For most customers we recommend WiFi or Ethernet; Thread/OpenThread is mainly useful if you intentionally use a Thread network.
The V4 is prepared for Thread/OpenThread, but it ships with WiFi firmware by default. Ethernet firmware can be installed via our firmware page. Only use OpenThread when you have a suitable Thread network, matching firmware and Home Assistant configuration. WiFi or Ethernet/PoE remains the recommended choice for most installations.
Place the water sensor on your water meter using the universal holder, optionally connect the RJ12 cable to your smart meter's P1 port and connect the V4 to your network. By default you use WiFi. If you want Ethernet or PoE, install the Ethernet firmware through our firmware page.
The detachable water sensor with a 3-meter cable gives you more installation freedom. You can place the main unit near your smart meter or network connection and mount the water sensor exactly on the water meter. This is useful when your water meter and meter cabinet are not next to each other.
Yes. The V4 ships with WiFi firmware by default. If you want Ethernet, you can install the Ethernet firmware yourself through our firmware page. The hardware is the same; the firmware determines whether you use WiFi or Ethernet.
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 V4 via WiFi or Ethernet.
Yes. The V4 has an extra expansion port for an optional water leak sensor or door sensor. This sensor is sold separately and can be used in Home Assistant alongside your water and energy data.
You can power the V4 via USB-C or via PoE. PoE is convenient because power and network run over one Ethernet cable, but it requires a PoE switch or PoE injector. USB-C always works as an alternative power option.
Still have questions?
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WaterP1MeterKit V4
70,00€ incl. 21% VAT