High precision detection: Accurately monitors PM2.5 particles and carbon dioxide levels with real time feedback to help maintain healthier indoor environments in homes or offices. Digital display: Clear digital readout for easy reading of PM2.5 and CO2 concentrations, providing instant updates for everyday monitoring. Versatile compatibility: Works with air purifier systems or operates as a standalone environmental sensor, helping optimize purification performance based on current pollutant readings. Easy calibration: Straightforward calibration function to maintain accuracy as environments change, ideal for consistent use. Key benefits - Improves awareness of air quality to support healthier living and working spaces - Enables informed decisions about when to run purifiers or adjust ventilation - Delivers reliable pollutant readings with simple setup and ongoing accuracy Use scenarios - Home kitchen or living room during cooking or gatherings to determine when to refresh air - Office meeting rooms to keep CO2 levels comfortable and productivity-friendly - Classrooms or labs to maintain safe PM2.5 and CO2 concentrations during activities