Indoor Air Quality Monitor

YESAIR 8-Channel IAQ Monitor

For monitoring: Ammonia, Arsine, Carbon dioxide, Carbon monoxide, Chlorine, Chlorine dioxide, Ethylene, Ethylene oxide, Fluorine , Formaldehyde, Hydrogen, Hydrogen chloride, Hydrogen cyanide, Hydrogen fluoride, Hydrogen sulphide, Methane, Nitric oxide, Nitrogen dioxide, Oxygen, Ozone, Phosphine, Silane, Sulphur dioxide, TVOCs and PM2.5 or PM10 particulates
Handheld IAQ monitor and data logging instrument, designed for intermittent or continuous indoor air quality monitoring of temperature, RH, particulates and up to 5 gases.


  1. Residential Buildings
  2. Commercial Buildings
  3. Hospitals
  4. Schools
  5. Airports
  6. Research Facilities
  7. and many more…


Target Gas Sensors
Ammonia (NH3), Arsine (AsH3), Carbon dioxide (CO2), Carbon monoxide (CO), Chlorine (Cl2), Chlorine dioxide (ClO2), Ethylene (C2H4), Ethylene oxide (C2H4O), Fluorine (F2), Formaldehyde (CH2O), Hydrogen (H2), Hydrogen chloride (HCl), Hydrogen cyanide (HCN), Hydrogen fluoride (HF), Hydrogen sulphide (H2S), Methane (CH4), Nitric oxide (NO), Nitrogen dioxide (NO2), Oxygen (O2), Ozone (O3), Phosphine (PH3), Silane (SiH4), Sulphur dioxide (SO2), TVOCs

Particulate Sensor
Externally mounted, PM2.5 or PM10

Enclosure: Rugged ABS / Polycarbonate (UL94 rated)
Weight: 567 g
Size: 197 x 78 x 98 mm (without antenna and particulate sensor)
25.4 x 12.7 x 8.9 cm  (with antenna and particulate sensor)

Case (included): Hard plastic storage/carrying case with foam lining

User Interface
Display: Back-lit, multi-line LCD alphanumeric display
Buttons: 3 tactile push buttons for user access
Calibration: Automated through keypad
Audible Alarm: Internal 80 dB @ 4’. One set point adjustment. Audible can be switched off through menuData Logging
Sampling Modes: Pump Model: Internal sample pump automatically draws in gas sample of target environment, particulates are sampled by diffusion
Diffusion Model: Sample air is diffused naturally over the gas sensors and particulate sensor
Memory: > 1 million data points data logging to SD flash card (optional)
Recording: 12 bit, multi-channel, user configurable with 2GB SD memory card slotOptional: YES Logger package with 2GB SD memory card, card reader, USB cable and YES Viewer SoftwareCommunication: Miniature USB port for changing settings and configuring logging functions
Auxiliary port for attaching the particulate sensor

Power: Rechargable 3.6 V NiMH battery pack with plug-in battery charger 100 – 240 V, 50-60 Hz
Continuous operation with plug-in wall adapter 6VDC, Class-III, 2 A DC max
Optional: Alkaline AA batteries x 3

Operating Temperature: 5°C to 50°C (41°F to 122°F)
Storage Temperature: -20°C to 60°C (-4°F to 140°F)
Operating Humidity: 0 – 99% RH non-condensing

Certifications Conforms to
CE standards for safety: I.S. EN61010-1:2001 (Ed.2)
CE standards for emissions: EN 50270:2006
CE standards for immunity: EN 50270:2006
RoHS compliant circuit boards
UL94 flammability rating


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