1. **Comprehensive Detection**: The 9in1 air quality detector DM155C provides precise measurements of CO2, PM2.5, HCHO (formaldehyde), and more, ensuring a thorough analysis of your indoor air quality. 2. **Advanced Sensors**: This industrial CO2/PM2.5/HCHO sensor tester is equipped with cuttingedge sensors, utilizing infrared (NDIR) for CO2 detection, scattering for PM measurements, and electrochemical technology for HCHO, delivering reliable results every time. 3. **UserFriendly Touch Display**: Effortlessly navigate realtime monitoring data with the intuitive touch display, allowing quick access to critical air quality conditions such as TVOC, temperature, and humidity. 4. **Compact and Portable Design**: With dimensions of 240 x 120 x 24 mm, the DM155C is designed for comfort and portability, making it easy to transport and use in various environments, whether at home or in industrial settings.