Aqara TVOC Air Quality Monitor Not Connecting or Calibrating

Aqara TVOC sensor monitors air quality, temperature, and humidity. This guide covers setup and calibration issues.

Sensor Not Pairing

1. Requires Aqara Zigbee hub (M1S, M2, E1)
2. Press and hold button 5 seconds to pair
3. LED flashes when in pairing mode
4. Keep within 30 feet of hub
5. Factory reset: Hold button 10 seconds

TVOC Readings Inconsistent

1. Sensor needs 48-hour calibration period
2. TVOC measures total volatile organic compounds
3. Readings fluctuate with ventilation
4. Cooking and cleaning spike readings
5. Baseline set during calibration period

E-Ink Display Not Updating

1. E-ink updates every few minutes (normal)
2. Press button to force display refresh
3. Display may lag behind app readings
4. Low battery causes slower updates
5. Replace CR2450 battery if needed

Temperature/Humidity Offset

1. Offset calibration available in Aqara app
2. Compare with reference thermometer
3. Apply offset to correct readings
4. Offset range typically +/- 5 units
5. Humidity offset also available

HomeKit Integration

1. Exposed via Aqara hub to HomeKit
2. Shows as air quality sensor
3. Temperature and humidity separate tiles
4. Create automations based on readings
5. History visible in Home app

Home Assistant via ZHA/Z2M

1. Can pair directly without Aqara hub
2. Reports TVOC in ppb or index
3. Temperature and humidity entities
4. Battery level entity available
5. Custom quirk may improve functionality