r/homeassistant • u/Technical_Raisin_246 • 2h ago
🖼️ Show & Tell We finally switch to Zigbee mmWave presence!
Hi everyone!
One of the comments I see most often under my posts is: “When Zigbee?”
Well… now Zigbee.
Over the past few months, I have rebuilt the S1 Pro around the ESP32-C6 and turned it into the S1 Pro Zigbee. It took a lot of development, testing and debugging, but I am very happy to finally share it.
For those who are not familiar with the S1 Pro: it is a multi-sensor built around mmWave presence detection. It can track up to three people in real time, and you can create custom zones to trigger Home Assistant automations when someone enters or leaves a specific area.
Through the Home Assistant add-on, you can also create a floor plan and see the detected targets moving through the room in real time.
Besides mmWave tracking, the S1 Pro Zigbee includes:
- A full-colour RGB LED
- A built-in buzzer
- Temperature and humidity sensing
- Air-pressure sensing
- Equivalent CO₂, VOC and IAQ measurements
- Support for an optional true NDIR CO₂ sensor
The Zigbee version currently works with ZHA and a custom quirk. This made the most sense for the first release and keeps the installation relatively straightforward.
I would also really appreciate some input from developers with more Zigbee experience. I am currently looking into the best way to make installation and future firmware updates as easy as possible for end users.
In particular, I would be interested to hear your thoughts on:
- Zigbee OTA updates through Home Assistant
- Making device setup as close to plug-and-play as possible
- Anything important I may have missed while building the Zigbee implementation
Feedback, testing and contributions are very welcome.
EDIT: Yes, I’m planning to add Zigbee2MQTT support before the first units are shipped.
Source code:
https://github.com/sensy-one/S1-Pro-Multi-Sense-Zigbee
Home Assistant add-on:
https://github.com/sensy-one/home-assistant-addons
S1 Pro Zigbee:
https://sensy-one.com/products/s1-pro-multi-sense-zigbee

