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Technical Specifications ​

Mechanical ​

  • Mounting hole diameter: 68 mm (fits standard Ø70 mm downlight cutouts)
  • Total sensor height: 60 mm
  • Flush depth (in‑ceiling): ≥ 48 mm

Power input ​

  • PoE: 48 V (802.3af) — single‑cable power & data
  • 110–240 VAC: Internal EU‑designed circuit with galvanic isolation
  • USB‑C: 5 V ⎓ 1 A

Network ​

  • Ethernet RJ45 10/100 Mbps (PoE support)
  • Wi‑Fi IEEE 802.11 b/g/n (2.4 GHz), WPA/WPA2

Sensors ​

  • mmWave radar: Hi‑Link LD2412S, Ø 9 m range, 75° FOV (optional LD2450 module)
  • Temperature & humidity: Sensirion SCD41
    • Temperature: –10 °C to +60 °C, ±1.5 °C (full range)
    • Humidity: 0–100 % RH, ±9 % RH (full range)
  • CO₂: Sensirion SCD41 — 400–5 000 ppm, accuracy ±(50 ppm + 2.5 % of reading)
  • Barometric pressure: Bosch BMP388 — 300–1 100 hPa, ±0.08 hPa typical
  • Ambient light: BH1750 — 0–65 000 lux

Visuals ​

  • LED Ring: 16 × WS2812B individually addressable RGB LEDs

Consumption ​

  • Power: 1.2 W (standby); up to 2.5 W (active)

Ingress protection ​

  • IP20 (indoor use)

Software & integration ​

  • ESPHome, OTA updates, Home Assistant compatible

Notes ​

  • Warning: Extended LED operation generates heat that can skew temperature, humidity, and CO₂ readings. Use cooldown intervals or reduce LED brightness during intensive use.
  • Fallback portal: If you connect to the fallback network, the web UI should open automatically; otherwise browse to http://192.168.4.1/.