8 In 1 Formaldehyde Air Quality Detector Gas Analyzer Comprehensive PM2.5 Detector HCHO TVOC Multifunction Air Quality Tester
- TVOC, formaldehyde, PM2.5, PM1.0, for PM10 test.
- Lcd screen.
- Easy to use.
- Test holes are designed to provide cross ventilation.
- Hand design makes it easy to detect the air.
- Short test time.
