Air X - Outdoor Air Quality Monitor

A wireless outdoor air quality monitor for real-time, continuous measurements of air pollutants.

Product Code: ENL-AIR-X

Designed and manufactured in the UK, the enLink Air-X LoRa Air Quality Monitor is a precision instrument which accurately measures up to 12 key environmental parameters. These include temperature, humidity, VOCs, carbon dioxide, particulate matter (PM1.0, PM2.5 and PM10), oxygen, ozone, barometric pressure, plus up to 4 plug-in gas sensors.

enLink Air-X is an outdoor version of enLink Air and uses the latest optical gas sensing technologies to provide improved accuracy and dramatically extended sensor life expectancy with no drift. The optical O₂ and CO₂ sensors have a life expectancy of >5 years and >15 years respectively, compared with under 12 months for traditional sensors. All enLink Air sensors are fully digital, factory calibrated devices.

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Built specifically for outdoor deployment, the enLink Air-X features a robust, weather-resistant design that ensures reliable operation in demanding environments. Housed in a durable enclosure (IP24 / NEMA rated) and equipped with an integrated air sampling fan, it maintains consistent airflow and measurement accuracy even in variable conditions such as wind, temperature fluctuations and pollution spikes.

The enLink Air-X is designed for external deployment across applications such as smart cities, industrial sites, transport hubs and environmental monitoring projects. Its rugged construction, long-range connectivity and ability to operate across wide environmental ranges make it ideal for continuous outdoor monitoring where reliability and data integrity are critical differentiators.

Based on LoRaWAN
Technology

Our enLink wireless products use LoRaWAN and LoRa, advanced wireless technologies that belongs to the category of non-cellular LPWAN wireless communication network protocols, operating in the license-free spectrum.

Incorporating long-range LoRa wireless with exceptionally low power requirements, the enLink Air-X Outdoor Air Quality Monitor can transmit data over distances of up to 16km, supporting large-scale networks of millions of devices. It seamlessly connects data to the cloud, delivering real-time, easy-to-analyse insights.

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Monitors ambient thermal conditions to ensure optimal comfort and equipment safety.

Temperature

Measures relative humidity levels to prevent mold growth and maintain air quality standards.

Humidity

Monitors Carbon Dioxide levels to manage ventilation efficiency and maintain cognitive performance.

CO2

Detects the presence of Volatile Organic Compounds to identify potentially hazardous chemical pollutants.

VOCs

Detects various sizes of particulate matter (dust, smoke, aerosols) for comprehensive air quality analysis.

Particles

Monitors ozone concentrations to protect against respiratory health risks in industrial or office environments.

Ozone (O3)

Tracks oxygen levels to ensure breathable air safety in confined or controlled spaces.

Oxygen (O2)

Measures atmospheric pressure changes to assist in weather prediction and HVAC airflow monitoring.

Pressure

The enlink Air-X has capacity for up to 4 additional plug-in gas sensors. The gas sensors are supplied as factory calibrated units together with calibration certificates. The plug-in gas sensors have the added advantage that at the end of their life they can be easily replaced with new calibrated sensors through the detachable sensor cover plate. The optical oxygen and carbon dioxide sensors have a life expectancy of greater than 5 years and 15 years respectively, compared with under 12 months for traditional sensors. Read more about the additional gases using the drop down below.

Technical Specification

Optional Gases (Up to 4)

Sensor Information

All ENL-AIR-X models measure temperature, humidity, barometric pressure, VOCs, CO₂, O₂, PM1, PM2.5, and PM10 as standard. The unit can also accommodate up to four plug-in gas sensors, with optional sound level monitoring available.

Core sensing

Temperature
High-accuracy ambient temperature sensing for reliable environmental monitoring.

Typical accuracy: ±0.2°C
Repeatability: ±0.1°C
Response time 𝜏63%: 2s

Humidity
Stable relative humidity measurement with fast response and strong repeatability.

Typical accuracy: ±2% RH
Repeatability: ±0.25% RH
Response time 𝜏63%: 4s

Pressure
Precision barometric pressure sensing for environmental and altitude-related applications.

Accuracy: ±0.12 hPa
Full-accuracy range: 300 to 1100 hPa
Resolution: 0.18 Pa

VOCs

Continuous VOC monitoring with IAQ index and TVOC output.

IAQ Index: 0 to 500
TVOC output: ppm
Response time: 1 s

CO₂
NDIR CO₂ sensing for air quality and ventilation applications.

Accuracy: ±(30 ppm + 3% of reading)
Standard range: 0 to 5,000 ppm
Extended range: 0 to 10,000 ppm
Response time: 3 minutes (𝜏90)

Oxygen
High-accuracy fluorescence-based optical sensing technology.

Accuracy: <2% ppO₂
Range: 0-25% O₂
Resolution: 0.01%
Response time: < 30s (𝜏90, typical)

Particulate matter
MCERTS-certified particulate matter (PM) sensor

Particles measured: PM0.5, PM1, PM2.5, PM4 & PM10
Sensing method: Laser-based light scattering particle sensing
Concentration range: 0 – 1,000 μg/m³
Accuracy:
PM1, PM2.5
- 0 μg/m³ to 100 μg/m³ ± 5 μg/m³ +5% m.v.
- 100 μg/m³ to 1000 μg/m³ ±10 % m.v.
Accuracy:
PM4, PM10
- 0 μg/m3 to 100 μg/m³ ± 25 μg/m³
- 100 μg/m3 to 1000 μg/m³ ±25 % m.v.
Mass concentration resolution: 1 μg/m³
Lower limit of detection: 0.3 μm
Response time: < 6s (𝜏90)
MCERTS Certified

Optional sensors

Plug-in gas sensors*
Add up to four plug-in advanced solid-polymer electrochemical gas sensors

Range and accuracy: see the relevant plug-in gas sensor datasheet for model-specific specifications.

Sound level*
Integrated acoustic sensing for sound level monitoring applications.

Sensitivity: -26 dB FS ±1 dB
SNR: 65 dBA
Dynamic range: 91 dBA
Acoustic overload point: 120 dB SPL

Applications

Power & Connectivity

The enLink Air-X At Work

Panama Canal

In partnership with industrial IoT service provider Senzary, Synetica's devices help monitor emissions from passing shipping.

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Air X - Outdoor Air Quality Monitor