Crownstone is a Dutch company, Crownstone B.V. of Rotterdam, that makes smart plugs and small built-in switch modules that sit behind outlets or light fixtures. The units form a Bluetooth Low Energy mesh and use phone signal strength to detect who is in which room, and they are set up and controlled through the Crownstone app.
Crownstones link to each other and to a phone over Bluetooth Low Energy rather than Wi-Fi. Remote and cloud control goes through the Crownstone cloud, and Home Assistant can alternatively use a Crownstone USB dongle to talk to the mesh locally. The firmware, app and several libraries are open source.
That suits tinkerers and Home Assistant users who want presence-based switching, such as lights that follow a person from room to room, and who value open code. It is weaker for mainstream voice control: we found no Alexa, Google Home, Apple Home or Matter support, and the verified App Store listing covers Apple devices only.
Connection
Bluetooth Low Energy mesh, with the Crownstone cloud
Voice assistants
Not found
Matter
Not found
Open platforms
Home Assistant, Homey, open-source firmware and a cloud API
What can be connected
Plugs Crownstone Plug, a smart plug with switching and energy measurement
Built-in modules Crownstone Built-In One, which fits behind outlets or light fixtures and can dim LEDs
Presence and localisation Room-level indoor localisation of phones, with four or more Crownstones, and presence-based switching
The app that sets up and controls Crownstone hardware. It offers automatic switching based on indoor localisation, device recognition for safety, scenes, double-tap switching, quick dimming and an opt-in energy history. It also supports a locally hosted cloud in place of the Crownstone cloud. The App Store listing shows the seller as an individual developer and lists iPhone, Apple Watch and Apple Vision. Crownstone's source repository says the app exists for Android too, but we found no Google Play link.
Official supported by the brandCommunity built by someone elseNot found searched, nothing foundUnconfirmed sources conflict or could not be opened
Platform
Status
What it means
Sources
Connection
Bluetooth Low Energy
Yes
Crownstones use Bluetooth Low Energy to detect when a phone enters a room, per the App Store listing. Crownstone's firmware, bluenet, describes a mesh network, and the company's localisation write-up discusses BLE signal strength fingerprinting.
Remote control goes through the Crownstone cloud. Crownstone's SDK page describes a Crownstone Hub that bridges the mesh to the cloud, without saying which hardware it is. Home Assistant's page says cloud control requires a phone in the Sphere, while a USB dongle lets Crownstones switch independently.
A built-in Crownstone integration has existed since 2021.10. It controls the Crownstone Plug and Built-In One, through the cloud by default or locally through an optional Crownstone USB dongle. Dimming is off by default and must be enabled per Crownstone in the app. The page lists @Crownstone among its code owners, so the vendor may be involved, but we could not confirm who maintains it.
Crownstone B.V. publishes a Homey app, listed as official, for Homey Cloud, Homey Pro, Homey Pro mini and the Self-Hosted Server. The listing says a Homey Bridge is required, and lists the technology as Cloud. It shows version 0.0.10, last updated about 5 years ago, so current compatibility is uncertain.
Crownstone's SDK covers a cloud REST API for setting up Crownstones, adding users and storing data, plus phone libraries and the bluenet firmware. The open-source Node.js event library receives cloud events such as presence, switching and data changes, and authenticates with an access token from a Crownstone account. Python libraries for the cloud and the USB dongle are in Crownstone's GitHub organisation.
The firmware is released under LGPL v3+, Apache and MIT licences, with a commercial licence also offered. It supports switching, dimming, energy monitoring, presence detection and mesh networking.
Checked 11 November 2026 against the brand's own pages, app store listings and each project's own page. “Not found” means we searched and found nothing, not that it is impossible. Compatibility changes often. Spot an error? Tell us and we will fix it.
Common questions about Crownstone
Does Crownstone support Matter?
Not that we could find. No Crownstone Matter announcement or support found in the searches run.
Does Crownstone work with Alexa?
Not that we could find. No integration found. A search for Crownstone with Alexa, Google, HomeKit and Matter returned only unrelated plug products.
Does Crownstone work with Google Home?
Not that we could find. No integration found. A search for Crownstone with Alexa, Google, HomeKit and Matter returned only unrelated plug products.
Does Crownstone work with Apple Home (HomeKit)?
Not that we could find. No HomeKit support found. The Crownstone app itself is listed on the App Store, but that is separate from Apple Home.
Does Crownstone work with Home Assistant?
Yes. A built-in Crownstone integration has existed since 2021.10. It controls the Crownstone Plug and Built-In One, through the cloud by default or locally through an optional Crownstone USB dongle. Dimming is off by default and must be enabled per Crownstone in the app. The page lists @Crownstone among its code owners, so the vendor may be involved, but we could not confirm who maintains it.
Does Crownstone work with SmartThings?
Not that we could find. No integration found in the searches run.
Does Crownstone work with Homey?
Yes, officially. Crownstone B.V. publishes a Homey app, listed as official, for Homey Cloud, Homey Pro, Homey Pro mini and the Self-Hosted Server. The listing says a Homey Bridge is required, and lists the technology as Cloud. It shows version 0.0.10, last updated about 5 years ago, so current compatibility is uncertain.
Does Crownstone work with Hubitat?
Not that we could find. No driver found in the searches run.
Answers come from the sourced table above. See how Crownstone compares with all brands on the smart home brand statistics page.