Monitor and control the quality of indoor air to protect lives and build confidence.

In our changing world we are becoming increasingly aware of our immediate environment and its impact on our health. Indoor air pollutants have always posed a potential health risk and as it has now been acknowledged that Covid-19 can be transmitted through airborne droplets we need to understand exactly how clear the air is that we are breathing in to both protect ourselves and to feel safe indoors.

There are tangible and intangible impacts to being exposed to poor indoor air quality. Not only can it spread viruses, cause nose, ear and throat irritations, induce headaches and exaggerate asthma it can also be responsible for reducing our cognitive performance.

Air pollutants can cause damage through inhalation, digestion, and absorption through the skin and as most are colorless and odorless human detection is almost impossible. Having reliable monitoring of indoor air quality is key to help safeguard the health and wellbeing of the people in your care.

Aranet4 shows CO₂ measurements directly on its e-ink screen with a corresponding color indicator and configurable sound alarms.

The easy to use air quality monitor will improve your building’s operational performance and keep spaces safe. The Aranet4 provides the data necessary for you to stay in control and make well-informed choices. It will clearly display when the air quality in an indoor space is safe to reassure its occupants or alert you to take action to correct the environment.

  • Range Introduction
  • Aranet4 - Wireless indoor air quality monitor
  • Aranet Base Station - Multi-Sensor data collection
  • Aranet Cloud - Personalize your data with custom dashboards
Aranet offers industrial IoT environmental monitoring solutions for a diverse range of businesses, making it easy to collect and analyze real time data. Aranet is designed and manufactured by SAF Tehnika.

Aranet4 is an innovative battery-powered stand-alone wireless sensor for monitoring CO2, temperature, relative humidity and atmospheric pressure at home, school, office or another indoor environment. The device is portable, simple to install, easy to operate and lets you know when the monitored levels have become unhealthy.

Aranet4 uses the most precise Nondispersive infrared (NDIR) sensor technology for accurate CO₂ measurements. It has a super-efficient e-ink display that extends its battery life up to 2 years (2xAA).


  • The sensor is compatible only with Aranet PRO base station
  • Measures: CO2 (carbon dioxide), temperature, relative humidity, atmospheric pressure
  • Line-of-Sight range: up to 3 km / 1.9mi
  • Operating environment: indoor use
  • Transmitter power: 14 dBm
  • Data Transmission: 1, 2, 5, 10 minutes
  • Battery life: Up to 2 years
  • Protection class: IP20
  • Dimensions: 70 x 70 x 24 mm/2.76 x 2.76 x 0.94″

Aranet4 PRO sensor Specification
Measurements CO2 (carbon dioxide), temperature, relative humidity, atmospheric pressure
Line of Sight Range Bluetooth up to 10 m / 33 ft
Aranet radio up to 3 km / 1.9 mi
Operating environment Indoor use
Transmitter power Bluetooth: -12 dBm or 4 dBm (selectable by user) Aranet LoRa radio: 14 dBm
Measurement range CO2 0-9999 ppm
temperature 0 °C to 50 °C (32 °F to 122 °F)
relative humidity 0 % to 85 % RH
atmospheric pressure 0.3 to 1.1 atm (4.4 to 16.0 psi)
Battery 2 AA Alkaline batteries / Up to 2 years

Aranet Base Station – collects the monitoring data form all your sensors

Aranet PRO is an industrial-grade environmental monitoring solution. Depending on how many sensors are required, the user can choose between three Aranet PRO versions – Aranet PRO 12, Aranet PRO 50 and Aranet PRO 100. The wireless sensors can be deployed within the line-of-sight range up to 3 km / 1.9 mi. Aranet PRO comes with free software. Easy to use interface allows viewing, analysing and comparing data in real time, set thresholds for alarms as well as exporting reports. Responsive design of the software adapts to smartphone, tablet or laptop.



Aranet Base Station – collects the monitoring data form all your sensors

The ideal technology for bringing your wireless monitoring to the next level Aranet Cloud is an industrial-grade solution for Aranet IoT ecosystems’ remote management. Personalize your data with custom dashboards, graphs and user management.

  • Multi-location sensor data capture
  • No installation or simple on premises installation – savings on costly and time-consuming installation
  • Data access from anywhere and any type of device
  • Integrations with other systems for process optimization – import new streams of data for improved decision-making
  • Automated data collection – data backup functionality
  • Easy-to-use systems – no more long and exhausting equipment and software trainings

Covid-19 can be spread by invisible respiratory droplets in the form of an aerosol that remain in the air for up to 9 minutes.

The survival of these airborne droplets depends on the quality of the air. Aranet4 accurately monitors C02 concentration, which is used as an indicator of air quality and whether there is sufficient ventilation. Should the quality of indoor air become unhealthy you will be alerted to take appropriate action and to increase the airflow to the room.

Proper ventilation significantly reduces the time these harmful aerosols remain airborne from 9 minutes to 30 seconds.