Technical Specifications

Mechanical

• Mounting hole diameter: 68 mm (fits standard Ø70 mm downlight cutouts)
• Total sensor height: 60 mm
• Flush depth (in‑ceiling): ≥ 45 mm, plus 15 mm with an Ethernet cable
• Visible outer ring: Ø 82 mm

Power input

• PoE: 48 V (802.3af), single‑cable power & data
• 110 to 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), WPA2 or WPA3

Sensors

• mmWave radar: Hi‑Link LD2412, up to 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 to 100 % RH, ±9 % RH (full range)
• CO₂: Sensirion SCD41, 400 to 5 000 ppm, accuracy ±(50 ppm + 2.5 % of reading) up to 1 000 ppm
• Barometric pressure: Bosch BMP388, 300 to 1 100 hPa, ±0.08 hPa typical
• Ambient light: BH1750, 0 to 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/.