This DM155C is a multi-functional air quality tester. It can detect and display multiple real-time readings, including CO₂, PM2.5, PM10, PM1.0, AQI, HCHO (formaldehyde), TVOC, temperature, humidity and time. It features a large display screen for clear data viewing. Equipped with touch keys for easy operation, you can simply tap the buttons to finish related settings.
 
It adopts professional sensors for different detection items: NDIR infrared sensor for CO₂, laser scattering sensor for PM2.5/PM10/PM1.0, electrochemical sensor for HCHO and semiconductor sensor for TVOC. Built-in rechargeable lithium battery with Type‑C charging port brings flexible power supply. Made of ABS material, it is durable and suitable for home, office and other indoor scenes.
 
Selling Points
1. Multi-parameter detection: It monitors CO₂, PM2.5, PM10, PM1.0, AQI, formaldehyde, TVOC, temperature and humidity at the same time, and synchronously displays the time.
2. Convenient touch control: Touch-sensitive keys bring simple and sensitive operation for function setting.
3. Professional high-precision sensors for each gas:
- CO₂: NDIR infrared sensor, accurate and stable readings
- PM2.5 / PM10 / PM1.0: Laser scattering sensor
- HCHO (Formaldehyde): Electrochemical sensor
- TVOC: Semiconductor sensor
4. Large display screen: All data are shown clearly at a glance.
5. Built-in rechargeable lithium battery with Type‑C charging port, convenient to charge and use wirelessly.
6. Solid ABS housing, size (240×120×20mm), easy to place.
7. Wide detection range to meet daily indoor air quality checking demands.