Indoor environment monitoring apparatus and monitoring system, and monitoring method thereof

The invention relates to an indoor environment monitoring apparatus and monitoring system, and a monitoring method thereof. With the environment monitoring apparatus, the indoor temperature and humidity, the light intensity, and contents of the CO2, formaldehyde and volatile organic compounds and the like can be monitored. In addition, one or more environment monitoring apparatuses form an environment monitoring system based on networking. With a corresponding monitoring method, continuous and long-time monitoring of an environment inside corresponding space can be realized, thereby obtaining a space environment model. The monitoring system can feed back the monitoring environment data to an HVAC system or an illumination control system, thereby realizing automatic controlling of the indoor temperature, humidity, air cleanness, air circulation, and light intensity.