650nm 5mW Red Laser Module for PM2.5 Dust Detection Sensor

650nm 5mW Red Laser Module for PM2.5 Sensor

This 650nm 5mW Red Laser Module is a high-precision core component exclusively designed for PM2.5 dust detection sensors, relying on mature laser scattering technology to achieve accurate measurement of airborne particulate matter. It’s a flagship choice for air quality monitoring scenarios, perfectly fit indoor air quality monitors, smart home air purifiers, portable environmental analyzers, industrial dust detectors, and automotive air quality sensing systems—integrating reliable PM2.5 detection performance, cost-effectiveness, and seamless integration to meet diverse demands of particulate matter sensing.

Core Technical Advantages for 650nm red laser module for PM2.5 Detection:

• 650nm Wavelength Optimization for PM2.5 Sensing: The 650nm red laser is tailor-made to enhance scattering efficiency with PM2.5 particles (0.3-2.5μm). Compared to infrared lasers, that red laser module delivers higher sensitivity to sub-micron pollutants; compared to blue lasers, it avoids instability from environmental interference (humidity, dust adhesion), ensuring consistent PM2.5 detection accuracy for long-term use.

• Stable 5mW Output & Low Power Consumption: that 650nm red laser module delivers continuous-wave (CW) output with power fluctuation ≤±3%, providing a stable light source for particle scattering detection. It operates on 3-5V DC low-voltage power supply—ideal for battery-powered portable PM2.5 sensors or energy-saving smart devices.

• Compact Precision Structure for Sensor Integration: With ultra-small dimensions (6×13.7mm, customizable), that 650nm 5mw red laser module fits seamlessly into the narrow optical chambers of miniaturized PM2.5 dust detection sensors. The laser beam features narrow divergence angle (≤1mrad) and narrow spectral linewidth (<5nm), forming a well-defined 3-5mm detection zone to capture individual PM2.5 particles without signal overlap, enhancing detection precision.

• Class 2 Laser Safety for Practical Use: Fully complies with IEC 60825-1 Class 2 safety standards, with 5mW output power posing no retinal damage risk in normal PM2.5 sensor operation. The visible red light also facilitates quick optical alignment during sensor assembly, reducing integration difficulty for manufacturers.