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Aranet4 sensor

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 PRO is compatible with Aranet Cloud.


Aranet4 anti-theft wall mount (25x19x10 mm) is available. The wall mount uses a Security Torx screw that needs a screwdriver with a security Torx T15 insert bit to remove it.


To learn more and order Aranet4 HOME online, visit aranet4.com.


If you face any questions or issues regarding Aranet4, please check the Aranet Forum and you will likely find the solutions there. If you encounter an issue or a question that hasn’t been answered before, please post it on the Aranet Forum and we will be happy to look for the solution together.



  • The sensor is compatible only with Aranet PRO base station 
  • Measures: CO2 (carbon dioxide) concentration, temperature, relative humidity, atmospheric pressure
  • Line-of-Sight range: up to 3 km / 1.9 mi
  • Operating environment: indoor use
  • Transmitter power: 14 dBm
  • Data Transmission: 1, 2, 5, 10  minutes
  • Battery life: Almost 4 year
  • Protection class: IP20
  • Dimensions: 70 x 70 x 24 mm/2.76 x 2.76 x 0.94 in
Uses the nondispersive infrared (NDIR) sensor to measure CO2
Almost 4 year battery life
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