Features Good Performance: The dust sensor module has six-sided omnidirectional shielding, strong anti-interference ability, and the inlet and outlet directions are optional High Reliability: The air quality sensor module has good reliability, 0 false alarm rate, real-time response, supports continuous collection, and the minimum resolution particle size is 0.3um. Operating Principle: The sensor uses the principle of laser scattering, that is, the laser irradiates the suspended particles in the air to generate scattering, and at the same time collects the scattered light at a specific angle to obtain the scattered curve light. Wide Application: The air quality sensor has a wide range of applications, users no longer need to design the ultra-thin design of the air duct, only 12mm, suitable for portable devices. MIE Theoretical Algorithm: The dust detection sensor adopts the MIE theoretical algorithm to obtain the equivalent particle size of the particles and the number of particles with different particle sizes per unit volume. Specification: Item Type: PM2.5 Sensor Module Material: Aluminum alloy Purpose: PM2.5 detection Input Voltage: 5V Working Current: ≤100mA Counting Efficiency: 50% at 0.3um 98% at ≥0.5 um Response Time: ≤10 s Package List: 1 x PM2.5 Sensor Module 1 x Terminal  Package List 1 x PM2.5 Sensor Module 1 x Terminal