What is a fresh air system?

A fresh air system is a new type of indoor air purification equipment. Through forced air supply and exhaust, it achieves air exchange between indoor and outdoor environments without opening windows. The Luftmy editor notes that a fresh air system is an open air circulation system that can continuously provide fresh oxygen-rich air indoors 24 hours a day. It became popular in residential areas in Europe and America as early as the 1970s and has been widely used in many domestic family residences, villas, and commercial houses in recent years.

What are the functions of a fresh air system:

1. Ventilation and effective oxygen enhancement.

2. Filtering PM2.5 and powerful haze resistance.

3. Removing indoor harmful gases to protect health.

4. Controlling indoor temperature, preventing dryness, and removing moisture.

The role of the PM2.5 sensor in the fresh air system:

One of the main functions of a fresh air system is to intelligently filter PM2.5 and haze from the air to purify it. The sensor module uses the optical scattering principle to monitor and detect the concentration of dust in the air. The PM2.5 sensor module has a built-in infrared LED and a high-sensitivity photoelectric receiver. The infrared LED emits light that generates reflections when encountering dust, and the photoelectric sensor reflects the dust concentration in the air by detecting the intensity of this reflected light. When the dust concentration in the air is too high, the fresh air system will automatically start the PM2.5 filtering function to achieve an air purification effect.