Indoor dust is a significant factor affecting human health, posing even greater risks to individuals with respiratory diseases or allergies. As a powerful tool for safeguarding respiratory health, the indoor dust sensor monitors indoor dust concentration in real-time and issues timely alerts to remind users to improve indoor air quality.

Under conventional circumstances, what are the alarm concentrations for indoor dust sensors?

Standard alarm concentrations for indoor dust sensors are typically as follows:

PM2.5: $le 75mu g/m^3$ (24-hour average), $le 150mu g/m^3$ (1-hour average)

PM10: $le 150mu g/m^3$ (24-hour average), $le 300mu g/m^3$ (1-hour average)

When indoor dust concentration exceeds these standards, the sensor triggers an alarm. However, these settings are not fixed and can be influenced by:

1. Human Health Impact: Different groups have varying sensitivities. Lower alarm concentrations can be set for sensitive groups such as children, the elderly, and pregnant women.

2. Regional Environmental Differences: Outdoor air quality varies by region. In areas with frequent smog, thresholds might be adjusted accordingly.

3. Development of Technical Standards: As detection precision improves, standard alarm concentrations may be updated.

When an indoor dust sensor issues an alarm, users should take measures such as: Ventilation (opening windows), Thorough Cleaning (dusting furniture and floors), Using Air Purifiers, and Reducing Pollution Sources (choosing materials with low volatile organic compounds).