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Usage Guide

This guide helps you use UltimateSensor Mini v1 in Home Assistant for room sensing and voice assistant use.

Key Entities

Environmental Monitoring

Entity Use Case
CO2 Ventilation and air quality
Temperature Room comfort and climate control
Humidity Humidity alerts and HVAC control
Illuminance Light-based automations
VOC Index / NOx Index Air quality monitoring

Voice Assistant

Entity Use Case
Media Player TTS, voice responses and audio feedback
Enable Voice Assistant Switch for local wake word and voice control, on by default

Presence Detection

Use Occupancy for room occupancy, lighting and automation triggers, and Polygon Zone 1 Presence to Polygon Zone 4 Presence for specific areas. See Sensor Definitions.

Voice Use

Mini v1 can use the standard Home Assistant voice pipeline. Install production firmware 3.0 or newer and keep the Enable Voice Assistant switch on in Home Assistant.

See Voice Assistant.

Placement Recommendations

  • Place it around 1.5 to 2 meters high.
  • Keep the microphone path clear if you use voice assistant.
  • Avoid placing it directly next to speakers, TVs, fans or constant noise sources.
  • Keep airflow around the housing for better climate readings.

Automation Examples

Note: The entity IDs below contain 1a2b3c. In Home Assistant this is the six-character code of your own device. Copy the real IDs from the device page.

Ventilation Based on CO2

automation:
  - alias: "Ventilate on high CO2"
    trigger:
      - platform: numeric_state
        entity_id: sensor.ultimatesensor_mini_1a2b3c_co2
        above: 1000
        for:
          minutes: 5
    action:
      - service: switch.turn_on
        target:
          entity_id: switch.ventilation_fan

Voice Response Through the Media Player

service: tts.speak
target:
  entity_id: tts.home_assistant_cloud
data:
  media_player_entity_id: media_player.ultimatesensor_mini_1a2b3c_media_player
  message: "Air quality is good."

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