Multifunctional air quality meter | 3000 mAh battery | audible alarm | portable and standalone | NDIR + laser technology

Technical Specifications

Model: DM72B
Purpose: Air quality meter (Multi-Gas Detector)
Measured parameters: CO₂: 400–5000 ppm; PM1.0 / PM2.5 / PM10; TVOC; HCHO (formaldehyde); Temperature; Relative humidity; AQI (Air Quality Index)
CO₂ technology: Infrared NDIR
PM particle technology: Laser scattering
Accuracy class: High accuracy
Alarm mode: Audible alarm
Data storage: Internal memory
Data export: CSV format
Power supply: Rechargeable lithium battery
Battery capacity: 3000 mAh
Housing: ABS plastic
Usage locations: Indoor / outdoor / bedroom / car
Certificates: CE, RoHS
Origin: China

Functions

Simultaneous measurement of key air quality indicators
Real-time display of readings on the screen
Audible alarm when preset limits are exceeded
Data logging and export for analysis (CSV)
Portable and autonomous – no permanent power required
Suitable for both preventive and professional diagnostics

Applications

For home users: Monitoring air quality at home, in bedrooms and children’s rooms; indoor CO₂ control to know when ventilation is needed; monitoring formaldehyde and TVOC after renovations or new furniture installation; healthier environment for sensitive or allergic people
For electricians / installers: Quick air analysis before and after ventilation system installation; comparison of CO₂ and PM2.5 levels in different rooms; data storage and reporting to customers (CSV reports); reliable tool for daily on-site work
For engineers / construction specialists: Microclimate monitoring in offices, schools, warehouses; collection of air quality data for analysis and optimization; additional tool for building automation solutions; decision-making based on real measurement data

Pros

One device – multiple measurements
High accuracy (NDIR + laser technology)
Data logging and export (CSV)
Rechargeable 3000 mAh battery
Audible alarm – added safety
Wide range of applications: home, car, job sites

Cons

Designed mainly for indoor and close-range measurements (not for industrial gas flows)
No integrated Wi-Fi / cloud (data exported manually)