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Local, open, and built for Home Assistant

SmartHomeShop: smart hardware for Home Assistant

Our products run 100% locally on your own network, with software that is fully open source. Every product is designed, developed, and built in the Netherlands, with a clear focus on quality, transparency, and seamless Home Assistant integration. We create purpose-built solutions for challenges standard products cannot solve, delivering features and reliability you will not find elsewhere.

UltimateSensor
UltimateSensor
CeilSense
CeilSense
WaterP1MeterKit
WaterP1MeterKit
P1SplitterKit
P1SplitterKit
Designed and made in the Netherlands
Local development, premium quality
14 day cooling-off period
Orders placed through the webshop include a 14 day cooling-off period.
Google Reviews
Rated 4.8/5 stars
10,000+ happy customers
View Google reviews
Worldwide shipping
Track & trace worldwide with clear updates and reliable shipping.

Our hardware for Home Assistant

Smart sensors for Home Assistant

View All Products
UltimateSensor v2

UltimateSensor v2

Our most complete sensor with CO2, VOC, temperature, humidity, lux, dual mmWave, extra PIR, built-in microphone and speaker. Works with WiFi, Ethernet, PoE and USB-C.

More information

UltimateSensor Mini v2

UltimateSensor Mini v2

More compact model with CO2, VOC, temperature, humidity, lux and dual mmWave. No microphone, speaker or extra PIR, but it adds Thread alongside WiFi, Ethernet, PoE and USB-C.

More information

CeilSense

CeilSense

All-in-one built-in smart sensor for ceiling or wall. Detects motion via mmWave, measures CO₂, temperature and humidity, plus 16 RGB LEDs for status and ambient lighting.

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WaterFlowKit

WaterFlowKit

Measure water usage and optional temperature per faucet, pipe or heating circuit. Connect up to 2 flow sensors for live insight into flow, consumption and temperature in Home Assistant.

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WaterP1MeterKit

WaterP1MeterKit

Measure water AND/OR energy by choice. Use for water only, energy only, or both together in one smart kit with live updates, Ethernet, and PoE support.

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WaterMeterKit

WaterMeterKit

Transform the water meter of your home into a smart monitor for direct, real-time insights into your consumption.

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P1SplitterKit

P1SplitterKit

Safely split your DSMR P1 port into five outputs for multiple devices.

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P1MeterKit

P1MeterKit

Immediate insight into your electricity and gas consumption from your DSMR energy meter.

More information

New delight variant to compare

Google Reviews
4.8 10,000+ reviews

Not just stars, but real experiences from customers using our products at home with Home Assistant.

Scroll horizontally to see more reviews.

Tanel Tammik
a year ago

"I recently purchased the Ultimate Sensor from SmartHomeShop, and I am extremely satisfied with both the product and service! Delivery to Estonia was impressively fast, arriving in just 4 days. The packaging was very professional, ensuring the product arrived in perfect condition. As for the sensor itself, it's high-quality and feels very premium. The comprehensive manual made setup a breeze, even for someone not super tech-savvy. I highly recommend this product and the shop for anyone looking for reliable smart home devices!"

Henrik
a year ago

"Efficient, Easy to Use, and easy to install! I purchased the smart water meter from Smart Home Shop, and I am thoroughly impressed! Installation was a breeze, and the meter integrates seamlessly with my smart home system. The real-time monitoring feature is fantastic,I’m able to track my water usage when someone takes a shower, which helps the family push each other to save water. The data is clear and easy to understand, and the app is a game changer for staying on top of my water consumption. Overall, this meter is not only saving me money but also helping me be more eco-friendly. Highly recommended for anyone looking to make their home smarter and more efficient!"

Jeroen E
a year ago

"I've bought several home automation devices here and they all work as intended, great packaging, you can definately see that great care is taken into getting a nice product out there. The aftersales (or presales for that matter) is great with direct access through discord where support and a (small) community is present for assistance if needed."

Jeroen Jonk
4 months ago

"I ordered the WaterMeterKit V2.0 for my analog Sensus water meter. The order was handled efficiently. After receiving it, installation was incredibly easy with the included adapter and manual. Simply follow the steps. It's great to see that Home Assistant immediately recognizes the WaterMeterKit. Excellent product! Highly recommended."

Jaime Visser
a year ago

"Good smart home products that aren't cloud-dependent. I have both the Ultimate Sensor Mini and the WaterP1meterKit, and both are easy to connect to Home Assistant and EspHome. The WaterP1meterKit was also easy to screw onto the water meter and connect to the P1 meter. Ordering through the webshop was easy. Delivery time was a bit longer because some products were out of stock at the time of ordering. This was clearly indicated, so it wasn't a problem."

SmartHomeShop Cloud

All your SmartHomeShop devices, clearly presented in one app

Want to view live readings, history, and alerts without maintaining your own Home Assistant setup? SmartHomeShop Cloud brings supported products together in one clear web dashboard.

Choose the cloud-enabled firmware during setup. The device remains available locally and can still work with Home Assistant; cloud sync is an explicit, optional choice.

The SmartHomeShop app is still in development. Features may change or be temporarily unavailable.

Live insight
View electricity, gas, water, indoor climate, and occupancy data, depending on the connected product.
History and costs
Compare days and months, view up to twelve months of history, and calculate energy and water costs using your own rates.
Alerts that fit you
Set alerts for events such as leaks, unusual consumption, or high CO₂ levels.

Dashboard

Home

5 devices online

P1MeterKit

Meter cabinet

281 W

feed-in 1.240 W

WaterMeterKit

Water meter

3,6 L/min

today 142 L

Energy costs this month

€ 86,40

History

12 months

Home Assistant

Home Assistant, enhanced for our products

Home Assistant lets all your smart devices work together locally. Our products appear through ESPHome by default, so you do not need a cloud account or an extra integration for normal use.

Install our free SmartHomeShop integration through HACS to add automatic product discovery, extra entities, ready-made dashboard cards, and tools such as Room Designer, leak detection, and Smart Energy. Everything stays on your own network.

What does the integration add?

Automatic product discovery

The integration finds supported SmartHomeShop devices and connects the right features without making you search for entities manually.

Ready-made cards and panels

Use visual dashboard cards, Room Designer, and Smart Energy without building everything yourself in YAML.

Local, free, and open source

The connection runs through ESPHome on your own network and is available free from the default HACS store.

The foundation

ESPHome works immediately

Once connected to your network, the product already appears in Home Assistant with its standard sensors and settings.

The upgrade

In 3 simple steps

  1. 1 Add the product through ESPHome
  2. 2 Install SmartHomeShop.io from HACS
  3. 3 Select your product and add the cards

For experienced users

More control, no mandatory cloud

Use extra entities, services, and visual editors in your automations. The integration stays local and its source code is available on GitHub.

ESPHome & Open Source

Our code runs on ESPHome

ESPHome is the firmware layer on the device itself (the software inside the sensor/kit). Home Assistant then communicates with that firmware locally on your own network. This keeps your data and control local, with a strong security baseline through local communication and encrypted API connections. This gives you a clear stack: hardware → ESPHome firmware → Home Assistant dashboard.

Open configurations on GitHub
OTA updates without vendor lock-in
100% local: your data stays on your own network
Strongly secured with local communication and encrypted API

Adopt our device in ESPHome

smarthomeshop.yaml
# 1) Import our package from GitHub
substitutions:
name: waterflowkit-587c20
friendly_name: WaterFlowKit 587c20
device_description: Kitchen WaterFlowKit
packages:
smarthomeshop.waterflowkit: github://smarthomeshop/waterflowkit/waterflowkit-v2/waterflowkit-complete.yaml@main
esphome:
name: ${name}
friendly_name: ${friendly_name}
# 2) Extend a package component with !extend
sensor:
- id: !extend total_water_usage
update_interval: 5s
accuracy_decimals: 2

Products that work in real homes

We make niche products for use cases where no good solution exists yet, or where existing products can be better. Sometimes we create something entirely new; sometimes we make an existing idea more practical for Home Assistant users.

The result is a solution that is easier to install, use, and maintain.

01

Development

Hardware and firmware in-house

Hardware, firmware, and configuration are designed to work together. That helps us solve issues faster and deliver focused improvements.

02

Support

Help with setup and everyday use

Our guides, support, and community help you from the first connection to daily use. If you get stuck, you can contact us directly.

Visit support
03

Community

Built with Home Assistant users

Community suggestions and real-world experience help decide which features, documentation, and improvements come next.

Discord 854 online 8,543 members
Dwain S., founder of SmartHomeShop
Dwain S. · Founder & product developer

Behind SmartHomeShop

Meet Dwain

SmartHomeShop was founded by Dwain S. He has been active in the Home Assistant community for more than ten years and is also known for the free Dwains Dashboard community project.

What began years ago with hardware for his own Home Assistant installations has grown into niche products used around the world. Design, firmware, assembly, documentation, and support deliberately stay close together, so real-world experience and feedback quickly become meaningful improvements.

10+
years active with Home Assistant
5+
years developing smart-home hardware
NL
designed and built in the Netherlands

Smart Home Specialist

Ready for a smarter home?

Choose your product, order instantly, and connect to Home Assistant in minutes.