Panasonic SN-GCJA5, Particle Matter / Dust Air Quality Sensor

The Panasonic sensor detects “PM2.5 (particle matters) in the air” by optical method. This sensor uses LD (laser diode) as light-emitting device and PD (photo diode) as light receiving device. The LD inside the sensor emits light to the air in a detection area. The PD inside the sensor detects scattering light which correlated to the actual floating particles in the air. A Microcomputer (MCU) inside the sensor analyses the wave profile from PD by optimistic algorithm, then output a converted mass-density (μg/m3) through I2C & UART interface.

Smaller size
High accuracy (±10%, from low to high concentrations)
High sensitivity & quick response
Maintain performance by unique Auto Calibration Function
Minimize dust accumulation by optimized air pathway structure and it makes possible to
avoid “tracking” for electrical safety