Technical Specifications

Hardware

• Product: UltimateSensor Mini v1
• ESP platform: ESP32-S3
• Housing: Compact modular enclosure
• Dimensions: 128 x 59 x 41 mm
• Indoor rating: IP20, indoor use only

Connectivity

• WiFi 2.4 GHz
• USB-C power

Mini v1 does not use the Mini v2 Ethernet/PoE firmware flow.

Sensors and Audio

• CO2 / temperature / humidity: Sensirion SCD41
• VOC / NOx: Sensirion SGP41
• Light intensity: BH1750
• Presence: Hi-Link LD2450 mmWave radar, tracks up to 3 people
• Voice assistant: built-in microphone and speaker
• Media player: Home Assistant media player entity
• Particulate matter: optional Sensirion SPS30 module

Software

• ESPHome firmware
• Native Home Assistant integration
• OTA firmware updates
• Local wake word included in Mini v1 production firmware 3.0 and newer