In seasons with high smog frequency, air PM2.5 levels exceed safety standards, becoming a threatening invisible health killer around us. Therefore, many families equip their indoor spaces with air purifiers. However, during outdoor travel, the confined space inside a car can also easily become a disaster area for air pollution. Harmful substances such as formaldehyde, toluene, second-hand smoke, and PM2.5 constantly surround us. Car air purifiers equipped with PM2.5 sensors have emerged to meet this demand, aiming to improve in-car air quality and solve respiratory health issues during travel.

In closed and cramped spaces, the concentration of PM2.5 is high, with many pollutant particles and unpleasant odors; CO2 concentrations also rise. Staying in a densely populated office space for a long time can make people feel stuffy.

Regarding the selection of PM2.5 sensors, the Luftmy LD15 dust laser sensor (PM2.5 sensor) is a universal, miniaturized module. Using Mie scattering theory to detect dust particulate matter in the air, it features excellent consistency and stability. It provides serial port and PWM output for easy use. Its small volume makes it easy to integrate. It offers good consistency, real-time response, accurate data, low power consumption, and a minimum resolution particle diameter of 0.1μm. It can be embedded in various instruments or environment improvement equipment related to suspended particle concentrations, such as air purifiers, air conditioners with purification functions, PM2.5 detectors, range hoods, smoke alarms, and fresh air systems, to provide timely and accurate concentration data.