Technical Specifications

Hardware

• Product: UltimateSensor Mini v2
• ESP platform: ESP32-C6
• Dimensions: 87 x 56 x 38 mm
• Housing: Compact modular 3D-printed enclosure
• Indoor rating: IP20, indoor use only

Connectivity

• Wi-Fi 2.4 GHz
• Bluetooth for WiFi setup (Improv)
• Ethernet
• PoE
• Thread, with the Thread firmware
• USB-C power

Sensors

• CO2 / temperature / humidity: Sensirion SCD41
• VOC / NOx: Sensirion SGP41
• Light intensity: BH1750
• Presence: HLK-LD2412 + standard HLK-LD2450 dual mmWave; optional LD2460 replaces LD2450
• Particulate matter: optional Sensirion SPS30 module

Not Included in Mini v2

• No microphone
• No speaker
• No media player
• No local wake word support
• No PIR sensor

Use the regular UltimateSensor v2 if you need voice assistant or audio output.

Detection

• LD2412: sensitive presence and micro-movement detection
• LD2450: target tracking, position and zones
• Optional upgrade: LD2460 replaces LD2450 and uses target 1-5 X/Y/Distance/Angle entities instead of LD2450 zones
• Range: LD2412 up to 9 m, LD2450 up to about 6 m
• Up to 3 tracked people; with the Room Designer 4 zones, 2 exclusion zones and 2 entry lines

Power

• USB-C
• PoE with compatible switch or injector

Software

• ESPHome firmware
• Native Home Assistant integration
• OTA firmware updates
• Configuration public on GitHub