Portable Indoor Air Quality Monitor



Indoor Air Quality (IAQ) refers to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. Understanding and controlling common pollutants indoors can help reduce your risk of indoor health concerns. Health effects from indoor air pollutants may be experienced soon after exposure or, possibly, years later.

Gas and respirable particulates in the air are the primary sources that contribute to poor IAQ. Sources can include inadequate ventilation, poorly maintained HVAC systems, wood and coal stoves, non-vented gas heaters, environmental tobacco smoke, vehicle exhaust emissions, building materials, carpeting, furniture, maintenance products, solvents, cleaning supplies etc. The actual concentrations of these pollutants can also be amplified by other external factors including poor ventilation, humidity, and temperature.

Next Sense Technologies made Indoor Air Quality Monitor, PAM-01, is a hand-held air quality monitor with microcontroller based design. It can detect indoor PM2.5 mass concentration, CO2 concentration, TVOC, temperature and related humidity and output real-time measurement. It comes with data logging facility and battery backup.

Optionally the PAM-01 also comes with a built-in Wi-Fi module, for continuous and online monitoring of IAQ index anytime and anywhere by data transmission to any server or a central display.

The PAM-01 is widely used for the purpose of Indoor air monitoring, Ventilation systems, Air purification systems in offices, industries and household.


  • Integrating laser particle sensor module (capable for real-time PM2.5 digital display), miniature and high-accuracy NDIR CO2 sensor module, semiconductor VOC sensor module (capable for digital display), RH&T sensor module.
  • The PM sensor module integrated adopts advanced laser scattering technology to detect PM2.5 mass concentrations precisely.
  • The VOC sensor module integrated is based on semiconductor principle, have great selectivity of formaldehyde, benzene, carbon monoxide, ammonia, hydrogen, alcohol and smoke of cigarette, etc.
  • The NDIR CO2 sensor module is with high accuracy, great stability, automatic calibration program (no need of manual maintenance)
  • Good consistency and real time response.
  • Accurate and reliable data.
  • Low power consumption.
  • Battery operated instrument.
  • Light weight body with easy user interface.
  • Internal memory for data logging.
  • Easy data retrieval through USB port.
  • With Voltage regulator design and anti-static ABS lead-free injection molding shell which can effectively shield electromagnetic interference.
  • Carrying case for easy handling.


  • Data logging: USB port
  • Data format: Microsoft Excel
  • Logging Interval: User selectable from 1 minute to 24 hours
  • Display: LCD
  • Battery: Rechargeable battery with 6 – 8 hours of backup
  • Accessories: Carrying case, Charger
  • Working temperature range: -10 to 500‑C
  • Working humidity range: -20 to 600C




PM 2.5

laser scattering technology

Range: 0 to 1000 ug/m3

Resolution: 1 ug/ m3

Accuracy: ≤ 100 μg/m³: ±15μg/m³

Accuracy: > 100 μg/m³: ±15% of reading


Digital sensors

Range: -10 to 50℃

Resolution: 0.1℃

Accuracy: 1.0℃


Digital sensors

Range: 5 to 99%RH

Resolution: 0.1%RH

Accuracy: 5%RH



0 to 3 level

Sampling method: Diffusion



400 to 2000 ppm

Resolution: 1ppm

Accuracy: ±(50ppm+5% of reading)