Overview
| White | Black |
|---|---|
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The UltimateSensor Mini v2 is the compact ESP32-C6 sensor for room climate, air quality and presence detection. It is the current Mini hardware generation and is different from Mini v1.
Have UltimateSensor Mini v1? Use the UltimateSensor Mini v1 documentation. Mini v1 has microphone, speaker and local wake word support. Mini v2 does not.
Key Features
| Feature | Description |
|---|---|
| CO2, temperature, humidity | Sensirion SCD41 |
| VOC & NOx | Sensirion SGP41 air quality index |
| Light intensity | BH1750 lux sensor |
| Dual mmWave | HLK-LD2412 for sensitive presence + standard HLK-LD2450 for tracking and zones |
| ESP32-C6 hardware | Firmware builds for WiFi, Ethernet or Thread |
| Particulate Matter | Optional Sensirion SPS30 module |
| Modular upgrades | Optional LD2460 radar upgrade replacing LD2450, plus click-in SPS30 module |
| Connectivity | WiFi, BLE Improv provisioning, Ethernet, PoE and Thread (with the Thread firmware) |
| Power | USB-C or PoE |
| Integration | ESPHome + Home Assistant |
What Mini v2 Does Not Include
- No microphone
- No speaker
- No local wake word support
- No media player entity
- No PIR sensor
- No barometric pressure sensor
Product Variants
| Webshop variant | Firmware name | Included |
|---|---|---|
| Without SPS30 | Basic | All Mini v2 sensors without the SPS30 particulate matter module |
| With SPS30 | Complete | All Mini v2 sensors + SPS30 particulate matter measurements |
In firmware and the web flasher, Basic means without SPS30 and Complete means with SPS30.
Both variants are available in white or black. If you start without SPS30, you can add the module later and switch to the Complete firmware.
Documentation
- Hardware Versions: Mini v2 and regular UltimateSensor v2 comparison
- Installation Guide: Unboxing, WiFi, Ethernet, PoE, Home Assistant
- LD2460 Upgrade: module replacement, orientation, mounting and range configuration
- Network Configuration: WiFi, Ethernet, PoE and Thread
- Connect via Thread: local Thread firmware with a Thread border router
- Usage Guide: Monitoring, automations, dashboard ideas
- Automatic LED Lighting: Motion light, night light, and CO2 warnings
- Sensor Definitions: All entities explained
- Calibration: CO2, temperature, humidity and radar calibration
- Troubleshooting: Common issues and solutions
- Technical Specifications: Detailed specs
- FAQ: Frequently asked questions
- Firmware & Software: Updates and customization
- Build a Bluetooth Proxy: Advanced self-built Ethernet Basic configuration
- SmartHomeShop App: cloud firmware and remote monitoring
- Home Assistant Integration: Custom dashboard card
- Warranty and Support: Warranty info and contact
Local Operation
UltimateSensor Mini v2 works locally with Home Assistant. Sensor data stays on your network.
Need Help?
- Discord: smarthomeshop.io/discord
- Support Portal: support.smarthomeshop.io
- GitHub: github.com/smarthomeshop/ultimatesensor-mini