Air pollution is ubiquitous, and particulate matter, as one of the main pollutants affecting human health, has become an environmental problem that cannot be ignored in daily life. Atmospheric particulate matter is a general term for solid and liquid particles suspended in the air, often referred to as PM (Particulate Matter) as a key indicator for measuring the degree of air pollution.

    Therefore, accurate detection of fine particulate matter such as PM2.5 is particularly important. The laser dust sensor uses a laser LED as a light source, drawing air into the detection area via a constant-flow fan. When particles pass through the laser beam, light scattering occurs. A photodetector is placed at a specific location on the sensor to receive only the scattered light signal and convert it into an electrical signal using the photoelectric effect. After amplification and processing, the concentration of fine particulate matter can be accurately calculated.

TX940-D07 Laser Dust Sensor

    The Tensensor TX940-D07, independently developed, is a general-purpose, miniaturized laser dust sensor module. Based on the Mie scattering principle, combined with professional algorithms and calibration processes, it can accurately detect particulate matter in the air.

    TX940-D07 laser dust sensor features a dual-ear positioning hole design, ensuring secure and convenient installation while maintaining excellent consistency and stability. It supports both serial port and PWM output modes, and its compact size makes it easy to integrate into various applications. For detailed product information, please feel free to contact us:

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