SEZO AL - monitoring jakości powietrza

SEZO AL Monitoring Outdoor Air Quality

  SEZO AL is a compact sensor device, measuring outdoor air quality (PM), indoor air quality (based on VOCs), as well as other environmental parameters, luminosity and noise level, with a built-in accelerometer, magnetometer and motion detection. This handy device is suitable both for indoor and outdoor environment monitoring.


SEZO AL provides information on outdoor air quality by measuring the levels of PM1, PM2.5 and PM10, which are very harmful to human health and life. The device thus provides information on whether it is safe to be outside.


It allows the devices to use unlicensed ISM band – which means no subscription fees are required. The devices using LoRaWAN send data either after being triggered by an event (e.g. movement, switching on the light) or based on a fixed schedule (e.g. every 15 minutes).


It enables easy USB configuration or device preconfiguration according to customer requirements. It is also possible to connect the device to another, already existing platform that your company uses, thanks to the possibility of easily establishing a network server, eg The Things Stack, Chirpstack. The decoder is available for download on github SEZO.


SEZO AL - outdoor air quality
  • SEZO AL monitors environmental parameters such as temperature, air pollution (PM), indoor air quality (based on VOCs), humidity, atmospheric pressure, light intensity and noise level.
  • Built-in PIR sensor allows detection of human presence within a range of at least 5 meters from the device.
  • SEZO AL transmits data at the time of an event (e.g. motion detection) or in user-defined intervals. Configuration is via USB.
  • SEZO AL can be used both indoors and outdoors – it operates without any interference at temperatures ranging from -30 to +60°C.
  • LoRaWAN technology enables long-distance data transmission – the distance between the device and the gateway can be up to 10 km.
  • SEZO AL is powered by 230V, so it can be connected to a standard electrical outlet.
SEZO AL - outdoor air quality

Get in touch with us to create a personalised system tailored to your needs. We will be happy to provide support starting with the concept phase and ending with the implementation of your system.

Use Cases


SEZO AL makes refineries and chemical production companies more secure.

Facility managers leverage the SEZO AL device to measure shocks and movements of critical facility components and machinery, thanks to the built-in accelerometer.

The device can be adjusted to clients’ individual needs, involving the measurement of basic environmental parameters, i.e. temperature, humidity, atmospheric pressure and sound levels. The device has an integrated alarm threshold configuration, giving the user the capability to adjust alarm thresholds of all measured parameters (such as temperature, humidity, light, air quality, as well as acoustic intensity).

The device is capable of sending data to the Orange Live Objects platform via LoRaWAN.


SEZO AL makes public institutions more comfortable and more efficient.

Public facilities like libraries, museums or city halls leverage SEZO AL capabilities such as monitoring temperature, humidity, sound level, and illumination to make the space more comfortable and efficient. Thresholds for the measured parameters can be set individually through the build-in alarm threshold configuration.

The integrated accelerometer enables measurement of shocks and/or movements (e.g. of objects such as doors or exhibition pieces) and can potentially decrease response time of facility security (more reliable than CCTV).

The device is capable of sending data to the Orange Live Objects platform via LoRaWAN.


SEZO AL makes schools a safer place for children and staff.

School management leverages SEZO AL to ensure good air quality both inside and outside of school premises. By measuring particulate matter such as PM10, PM2.5 and PM1, SEZO AL helps detect harmful pollutants on school yards and parking lots. When placed on school corridors or inside classrooms, SEZO AL allows you to continuously check the effectiveness of the ventilation system in school buildings.

The device is powered via AC 230V power supply, and can therefore be used conveniently in various locations with a common power socket.

The device is capable of sending data via LoRaWAN to the Orange Live Objects platform.


SEZO AL enhances security processes at industrial manufacturing sites.

The device is capable of sending data to the Orange Live Objects platform via LoRaWAN and pulls data from the environment like dust levels (PM1 / PM2.5 / PM10), sound levels. SEZO AL device is powered by AC230V and has an alarm threshold configuration for all measured parameters.

The device has an integrated PIR (infrared) sensor, so it can detect the presence of people (like light detectors). This can be used as an alarm function, individually configured by the user. PIR sensors are commonly used in security alarms and automatic lighting applications.

Do you want to share information about SEZO AL with your company’s CTO?
Send a link to this page or attach a brochure in PDF format – available for download below.


Measured parameters

Particulate matter concentration, volatile organic compound concentration, temperature, humidity, atmospheric pressure, light intensity, noise level and movement (PIR)

Operating temperature

-30 ÷ 60°C

Measurement range and accuracy

  • PM: 0 ÷ 500 µg/m3, ±10 µg/m3 @<100 µg/m3 (measurement disabled below -10°C and above 95% RH)
  • IAQ (Indoor Air Quality), range 0-500, typ. ±15, measurement resolution 1
  • Temperature: -30 ÷ 60°C, typ. ±0.5°C, max ±2°C
  • Humidity: 0 ÷ 100%, typ. ±4%, max. ±7% @25°C
  • Air pressure: 300 ÷ 1100 hPa, typ ±1 hPa max ±3 hPa
  • Luminosity: 0 ÷ 1000 lx, typ. ±10%, max ±35% @500lx
  • Noise: 40 ÷ 100dB, ±6dB at voice frequency band
  • PIR motion detection: at least 5m range for a human-sized object

Communication protocol

LoRaWAN v1.0.3, Class C device

Frequency and transmission power

868 MHz, max. 14 dBm

Data transmission interval

Default 15 minutes (configurable) or event-triggered

Power supply

internal power supply, 100-240V 50Hz max. 1W, Europlug

Enclosure and mounting

IP55, polycarbonate, four screw holes


320 [g]

Product dimensions

Body: 100 x 89 x 49.7 [mm]

Body with mounting plates: 148 x 89 x 83 [mm]

Contact us to create a system tailored to your requirements. We will be happy to provide support from the concept phase to the implementation of your system.

Our engineers are experienced in solving EMC problems - you can be sure that the tested device is EMC compliant.

aleja Zwycięstwa 96/98
81-451 Gdynia, Poland

+48 58 663 10 10

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Air quality - Tricity & surroundings

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SEZO sp. z o.o.  realizuje projekt dofinansowany z Funduszy Europejskich
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Poland ScaleUp Hardware & IoT Accelerator Program — Brinc
EU funds - SEZO Poland
Space3ac acceleration program - SEZO Poland
Brinc Accelerator - SEZO Poland
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