Air quality monitor Air PRO - Particle monitoring systems - NO2 sensors

Kunak AIR Pro Outdoor Air Quality Monitor

The air quality monitoring station for professionals


After 7 years of designing and deploying small air quality stations all over the world, we have created the new Kunak AIR Pro, a huge evolution of our previous sensor-based air quality monitoring station designed to solve all the lifecycle challenges of an air quality product, its operation and maintenance, as well as the need of every environmental project.

Its multipollutant cutting-edge design includes environmental sensors as well as connectors for external weather sensors or probes which, together with its solar panel operation and real-time wireless data transmission makes the Kunak AIR Pro the most advanced air quality monitoring station on the market.


CO   CO  NO   NO2  O3   SO2   H2 NH3   VOCs   |   PM1   PM2.5   PM10

Temperature, humidity, atmospheric pressure and dew point.


Smart Environment



Set up in less than 10' with visual diagnosis in a built-in display


Replace and combine cartridges with a plug & play system


Designed for type approval & certification


Adjust the baseline and span remotely


Visualize, analize and manage your data in the cloud


Measure up to 5 gases and particulate matter at once


Autonomous operation with its built-in battery and solar panel


Access to your data and alarms in real-time


Connect wind, rain, noise, and other sensors


We enable decision making with
large and accurate
environmental data

Why Kunak AIR is the best Air Quality monitoring station?


Data architecture


  • Nodes and sensors with embedded communications
  • Samples geolocalized data in real time
  • Wireless data transfer
  • Remote configuration and calibration
  • Small size and lightweight

* The data is calculated in each node independently, transparently and in real-time. Post-processing is not done in the cloud.


  • Wireless connectivity
  • GSM | GPRS | 2G | 3G | 4G | LTE | Ethernet
  • Embedded systems
  • Enables to make use of local networks



  • Cloud Platform via HTTPS – scalable and secure
  • Hosting  on Amazon web services
  • 99% data availability
  • Redundant databases
  • APN and private VPN On-premises
  • Data export with Open API
  • Multi operator SIM included

APPLICATIONS The advanced platform for air quality networks remote management and noise levels analysis.

  • Advanced analytics.
  • Remote calibration.
  • AQI tools.
  • User management.
  • Data validation & reports.
  • Configuration of sampling periods, sending periods, alarms and thresholds.
  • Open API & Connectors.
  • Fiware, Sentilo and any other customized.
  • Communications engine. Installable with DDBB (various formats).
  • Responsive design.


257 x 270 x 225 mm
Weight <3.5 kg
Enclosure PMMA & Polycarbonate & Stainless steel
Operating temperature -20 ºC to +60 ºC
Operating humidity 0 to 99 %RH
IP rating IP65
Battery Lithium 2.9Ah or 26Ah
External supply 7 – 12 Vdc. Charger or Solar panel
Autonomy 24/7 with solar panel or charger
Power consumption 0.08-1.2W (depending on configuration)
Communications Multi-Band 2G/3G/4G (LTE-FDD/LTE-TDD/UMTS/ HSDPA/HSUPA/HSPA+/GSM/GPRS/EDGE) or Ethernet
Gas sensors CO, CO2, NO, NO2, O3, SO2, H2S, NH3 & VOCs
PM sensor PM1, PM2.5 & PM10
Internal status Temperature / Battery / Charging voltage & current / Signal
Built-in sensors Temperature, humidity, atmospheric pressure and dew point
Additional sensors & actuators #3: Noise meter & Digital output (Relay)

#4: Modbus RS485 RTU & 4-20mA & Configurable power supply output

#5: Anemometer & Rain gauge inputs

Sampling frequency 3Hz gases, 1Hz particles
Averaging periods From 10 seconds to 1 hour
Sending periods Configurable from 5 min to 4 hours
Remote management Bidirectional communications
Remote configuration and calibration
SIM Embedded eSIM and SIM holder




Measurement Parameters

Parameter Type Unit of measurement Measurement range (1) Resolu-tion (2) Operat. temp. range (3) Operat. RH range (4) Operat. life (5) Guarantee range (6) Limit of detection (11) Performance limit
level (14)
Typical accuracy (15) Typical 90% confidence interval(16) R2 typical precision
CO Electrochemical µg/m3, ppb 0-12,000 ppb  1 ppb -30 to +50 ºC 15 to 90 %RH > 24 months 1,000 ppm 10 ppb < 50 ppb ± 0.08 ppm 0.125 ppm > 0.85
CO2 Non-dispersive Infrared µg/m3, ppm 0-5,000 ppm  1 ppm 0 to +50 ºC 0 to 95 %RH > 7 years ± 30 ppm
NO Electrochemical µg/m3, ppb 0-5,000 ppb  1 ppb -30 to +40 ºC 15 to 85 %RH > 24 months 20 ppm 2 ppb < 5 ppb ± 4 ppb 10 ppb > 0.9
NO2 Electrochemical µg/m3, ppb 0-5,000 ppb  1 ppb -30 to +40 ºC 15 to 85 %RH > 24 months 20 ppm 2 ppb < 10 ppb ± 5 ppb 10 ppb > 0.85
O3 Electrochemical µg/m3, ppb 0-2,000 ppb  1 ppb -30 to +40 ºC 15 to 85 %RH > 24 months 20 ppm 2 ppb < 10 ppb ± 8 ppb 14 ppb > 0.9
H2S Electrochemical µg/m3, ppb 0-2,000 ppb  1 ppb -30 to +50 ºC 15 to 90 %RH > 24 months 100 ppm 4 ppb < 10 ppb ± 10 ppb 20 ppb > 0.75
SO2 Electrochemical µg/m3, ppb 0-10,000 ppb  1 ppb -30 to +40 ºC 15 to 90 %RH > 24 months 100 ppm 5 ppb < 20 ppb ± 15 ppb 25 ppb > 0.7
NH3 Electrochemical mg/m3, ppm 0-50 ppm  0.1 ppm -10 to +50 ºC 15 to 90 %RH > 24 months 100 ppm <0.1 ppm < 0.5 ppm ± 0.3 ppm
VOCs Photoionization mg/m3, ppm 0-40 ppm  0.01 ppm -20 to +60 ºC 0 to 99 %RH 10,000 hours 20 ppm 0.01 ppm
PM1 Optical particle counter µg/m3 0 – 1,000 µg/m3 1 µg/m3 -10 to +50 ºC 0 to 95 %RH > 24 months ± 6 µg/m3 12 µg/m3 > 0.9
PM2.5 Optical particle counter µg/m3 0 – 1,500 µg/m3 1 µg/m3 -10 to +50 ºC 0 to 95 %RH > 24 months ± 10 µg/m3 18 µg/m3 > 0.8
PM10 Optical particle counter µg/m3 0 – 2,000 µg/m3 1 µg/m3 -10 to +50 ºC 0 to 95 %RH > 24 months ± 18 µg/m3 30 µg/m3 > 0.7
Noise LAeq Omnidirectional mic dB(A) 35 – 130 dB(A) 0.1 dB(A) -30 to +50 ºC 1 to 95 %RH > 24 months  Freq. range
± 1 dB(A) 3 dB(A) > 0.9
Temperature Solid state ºC -40 to +150 ºC 0.01 ºC -40 to +150 ºC 0 to 100 %RH > 5 years ± 0.9 ºC 1.5 ºC > 0.95
Relative humidity Solid state %RH 0 – 100 %RH 0.18 Pa -40 to +150 ºC 0 to 100 %RH > 5 years ± 3 %RH 6 %RH > 0.95
Pressure Solid state hPa 300 – 1,100 hPa  ± 7 ppb -90 to +85 ºC 0 to 100 %RH > 5 years ± 2 hPa 3 hPa > 0.95

(1) Measurement range: Concentration range measured by the sensor.
(2) Resolution: Smallest unit of measurement that can be indicated by the sensor.
(3) Temperature range: Interval of temperatures that the sensor could be exposed to.
(4) RH range: Interval of humidities that the sensor could be exposed to.
(5) Operating life: Lifetime of the sensor in normal conditions. Long exposures to humidity above 85% can damp the sensor and affect the measurements.
(6) Guarantee range: Limit covered by the guarantee.
(11) LOD (Limit of detection): Measured quantity value giving the probability of falsely claiming the absence or presence of a component.
(14) Performance limit level: Readings below this level can have lower performance than specified. Measured against reference instrument.
(15) Typical accuracy: Is obtained as the mean absolute error (MAE) between KUNAK AIR hourly measurements and reference instruments in 1 to 8 months field test between -10 to +30ºC in different countries.
(16) Typical 90% confidence interval: 90% of the hourly measurements obtained in 1 to 8 months field tests between -10 to +30ºC in different countries are below this absolute error comparing to reference instruments.
(17) Typical precision R2: The average R² between Kunak AIR Pro hourly measurements and reference instruments in 1 to 8 months field tests between -10 to +30ºC in different countries.

Gas cartridges

Kunak Smart Gas Cartdriges solve many of the known issues of sensor technology: sensor variability, factory and field calibration, automatic data invalidation, sensor replacement, network operation and maintenance work.

Kunak’s Smart Gas Cartridges ensure measurement control throughout the life cycle of each sensor, making the Kunak AIR Pro more sustainable and our customers’ lives easier.



Traceable QC & QA icon Endless combinations icon Plug & Play icon More sustainable icon


Each cartridge is calibrated and validated individually in lab against traceable reference standards.


Combine the Parameters freely. Reuse and scale your base stations at your own pace.

Plug &

Simply take the old one out and replace it easily with the new one, on the field. Be back online in 2′.


The electronic and mechanical parts can be reused, making it the most sustainable AQ sensor-based station in the market.





GasPlug TM technology (patent pending)

All the cartridges have the same size and fit in any of the five available sockets. Inside the cartridge, we install the sensor into a PCB that storages its all information: type, age and factory calibration. When you plug the new cartridge, the basestation just reads the information, configures itself and starts working.

Carbon monoxide


Carbon monoxide

Carbon dioxide


Carbon dioxide

Nitric Oxide


Nitric oxide

Nitrogen dioxide


Nitrogen dioxide




Hydrogen sulfide


Hydrogen sulfide

Sulphur Dioxide


Sulphur Dioxide




Volatile Organic Compounds


Volatile Organic Compounds

Particulate matter

PM1 - PM2.5 - PM10

Particulate matter




Environmental data

Cº - %RH - hPa

Environmental data



The electronic and mechanical parts can be reused, making Kunak AIR Pro the most sustainable Air Quality sensor-based station in the market.


You can’t improve
what you can’t measure.


Sound Level Meter

Low-cost wireless system for the monitoring of urban and industrial noise. Type 2 sound level meter that captures data in real-time and sends it wirelessly to Kunak Cloud, a Noise Management Software for advanced analysis and remote configuration of sensors, which allows integration of information onto ERPs and Smart City platforms.


Internal Battery

The Kunak AIR Pro is supplied with an internal rechargeable lithium battery to prevent loses of power supply. In this way, it can continue measuring for long periods of power loses, until the power supply is restored. The battery can be recharged using the avail-able charger or by the external power supply. The device will be mounted with a 1 cell or 9 cell battery (according to configuration).


Mode of operation


Avg. consumption

Avg. duration

Device ON without OPC 1 Cell – 2,900 mAh 0.08 W 70 hours
Device ON with OPC in Low-power mode 1 Cell – 2,900 mAh 0.32 W 24 hours
Device ON with OPC 1 Cell – 2,900 mAh 1.20 W 8 hours
Device ON without OPC 9 Cell – 26,100 mAh 0.08 W 30 days
Device ON with OPC in Low-power mode 9 Cell – 26,100 mAh 0.32 W 9 days
Device ON with OPC 9 Cell – 26,100 mAh 1.20 W 3 days

Average power consumptions of the Kunak AIR Pro in the different modes of operation considering a sampling period of 5 minutes and a sending period of 30 minutes.


Solar panel

The 12-watt and the 6.3-volt high-efficiency monocrystalline solar panel is robust, waterproof (IP67) and has been designed for prolonged outdoor use in any environment. The photovoltaic panel makes the device totally autonomous from the power grid, allowing the installation anywhere without civil works or in remote locations.


Indoor charger

The Kunak AIR Pro is always supplied together with a switching adaptor. It can be either for European or Global plugs. Input voltage 100-240V AC 50-60 Hz, Output voltage 12V DC, Output current 1.67A.


Outdoor charger

If the Kunak AIR Pro is going to be installed outdoors, it must use a charger that can withstand these conditions. It is small (22.2 x 30.0 x 20.0 cm), lightweight (220 g), waterproof (IP67) and has been designed for prolonged outdoor use in any environment.


Mechanical Anemometer

It includes both wind speed and wind direction sensors. Rugged components stand up to hurricane-force winds yet are sensitive to a light breeze. It includes sealed bearings for long life. The range and accuracy specifications have been verified in wind-tunnel tests.


Ultrasonic anemometer

It includes both wind speed and wind direction sensors. It is an ultrasonic self-powered anemometer. The power requirement is fairly small and is met by means of a small solar panel sitting on top of the unit along with a rechargeable lithium battery in the wider part of the stem of the unit, immediately below the ultrasonic platform.


Rain gauge

It is highly reliable, simple to maintain and simple to clean, it has found applications in all climates. Proven self-emptying bucket technology to ensure uninterrupted measurement of precipitation regardless of amount and intensity. It measures rain by means of a standardized orifice funnel which collects water into a self-emptying bucket mechanism. This mechanism offers a more consistent long-term response than tipping-bucket rain gauges because its counterweight is not affected by water, dirt and dust accumulation.



The pyranometer measures solar radiation with a high-quality blackened thermopile protected by a dome. The blackened thermopile provides a flat spectral response for the full solar spectrum range, which enables it to be used under plant canopies or lamps, when the sky is cloudy, and for reflected radiation measurements.
It includes a bubble level, three adjusting screws, and a cable gland. The bubble level and adjusting screws allow the sensor to be levelled without using a levelling base. The gland facilitates cable replacement.


Wet Bulb Globe Thermometer (WBGT)

The wet-bulb globe temperature (WBGT) is a measure of the heat stress in direct sunlight, which takes into account the temperature, humidity, wind speed (wind chill) and solar radiation. It is used in OHSAS, in sporting events and by military agencies to determine appropriate exposure levels to high temperatures.


              • Ø70 mm aluminium globe (black)
              • Mast mount included
              • Durable polyester coating for permanent installation

Ultraviolet-A Sensor

The UV-A sensors detect UV radiation from 300 to 400 nm and are calibrated in energy-flux density units of watts per square meter (W m-2, equal to Joules per second per square meter). The output can also be expressed in photon flux density units of micromoles per square meter per second (μmol m-2 s-1). Typical applications of UV sensors include incoming UV radiation measurement in outdoor environments or in laboratory use with artificial light sources (e.g., germicidal lamps). Apogee Instruments SU-200 series UV-A sensors consist of a cast acrylic diffuser, photodiode and signal processing circuitry mounted in an anodized aluminium housing and a cable to connect the sensor to a measurement device and are designed for continuous UV-A radiation measurement in indoor or outdoor environments.






Smart Environment catalogue




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Do you need to have more control over your business or city?
Do not hesitate, get in touch with us.
We will study your case and help you find the most appropriate solution.