We’re proud to announce that Sensereo is officially a Works with Home Assistant certified partner. Our MS-1 Smoke Alarm and MSC-1 Smoke and Carbon Monoxide Alarm have been tested and certified by the Home Assistant team — confirming they meet the program’s strict requirements for local control, privacy, and long-term support. No cloud. No subscriptions. No single point of failure.
This is a milestone we’ve been working toward since day one, and it reflects everything we believe smart home safety should be: open, resilient, and fully in your hands.
Below is the full announcement from the Home Assistant team.
Originally published on the Home Assistant Blog on May 28, 2026. Reposted with permission.
Sensereo joins Works with Home Assistant
By Miranda Bishop, Home Assistant — May 28, 2026
We’re sensing a change in the air this month as we welcome Sensereo to the Works with Home Assistant program 🎉. Specialists in environmental sensing, Sensereo brings Matter smoke and carbon monoxide (CO) alarms into the Home Assistant ecosystem – meaning more ways to keep your home open, safe, and sound.
Built from a burning question…
What happens if your smoke alarm goes off, but you’re not there to hear it? It’s an unsettling question, and one that led Roy Chen to found Sensereo in 2024. Driven to create safety devices that were equal parts reliable and resilient, Sensereo built the Matter-based MS-1 Smoke Alarm and MSC-1 Smoke and Carbon Monoxide Alarm, because as they put it: “every home deserves a system that will not fall silent when it matters most.”
It’s just good sense
For anyone unfamiliar, Matter is an open standard that lets smart home devices from different brands work together, regardless of who made them – no lock-in, no closed ecosystems. It’s exactly the kind of open, interoperable technology the Open Home Foundation exists to champion. Thread operates on the same principle: it’s an energy-efficient, wireless mesh network that connects devices directly to one another and can automatically reroute around disruptions. And for battery-powered alarms like Sensereo’s, Thread’s low-power design means fewer battery changes for devices that are always on duty.
While we’re talking about safety, it’s important to note that if your Thread network did for any reason drop out, Sensereo’s smoke and CO alarms will keep working as a “regular” alarm would – no smart home required.
That peace of mind is central to how Sensereo thinks about their products, and having caught up with the team at CES 2026 earlier this year, we can tell you it’s just the beginning. Air quality sensors and more are on the horizon, all building toward the same vision: to build an environmental intelligence system for the home that helps users understand and respond to their surroundings.
“Joining the Home Assistant ecosystem is a natural step for us, as it enables an open and user-driven platform where these capabilities can truly come together. We’re excited to contribute not only our current fire safety products, but also future sensing devices that expand how people interact with and manage their living spaces.”
— Roy Chen, Sensereo Founder
Devices
Most of us want our smoke alarms to be “reasonably annoying,” and Sensereo clearly agrees, because they printed this very description on the MS-1’s packaging. Which, as we love to see, has been designed sustainably – signaling the company’s commitment to one of the Open Home Foundation’s three core principles before you’ve even opened the box.
The MSC-1 goes a step further with a nifty, built-in digital display showing real-time carbon monoxide levels. Since CO is odorless and invisible, being able to accurately check levels at a glance lets you know if there is a rise and act before it becomes an emergency – not just after an alarm sounds.
And with local integration, that kind of proactive awareness extends further still – allowing you to build around the people in your home, not just the devices. A smoke detection event could flash smart bulbs for a family member who’s hard of hearing, or send a separate alert to a caregiver. Your alarm does its job – and so does everything else around it. It’s this kind of thoughtful design that shows us Sensereo are here for all the right reasons.
Like all partners of the Works with Home Assistant program, Sensereo commits to providing long-term support and firmware updates, as well as staying connected to the community they’re helping protect 💪. As always, the MS-1 and MSC-1 have been rigorously tested and certified by our in-house team to meet our core requirements of local control, privacy, and long-term sustainability. The program’s operated by the Open Home Foundation, which is funded with the support of Home Assistant Cloud subscribers. With each new partner like Sensereo that expands the program, we’re able to give more choice, support, and peace of mind to Home Assistant users.
Breathe easy
No smoke and mirrors – just reliable home safety devices and a team that clearly gets what this community is about. Sensereo’s commitment to building open, locally controlled tech is fundamental to the Works with Home Assistant program, and why we’re so thrilled to have them on board. Check out our certified device list to see what else is there!
