Portable Air Quality Monitor BZAQ-502 - personal air quality monitor
Labzee Portable Air Quality Monitor measures CO₂ 400–5000 ppm, PM2.5/PM10 up to 999 µg/m³, HCHO, TVOC, temperature, and humidity. It uses NDIR, laser scattering, and semiconductor sensors with 1.5 s sampling and LCD display. Compact unit runs on a 3000 mAh battery for indoor monitoring.