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Aranet4 PRO Indoor Air Quality Monitor

Aranet4 PRO Indoor Air Quality Monitor - CO2 Meter
Regular price $149.00 Sale price

Compare at $199.00

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The Aranet4 PRO Indoor Air Quality Monitor is a sleek, modern, wireless, desktop indoor air quality device designed to measure and detect carbon dioxide, temperature, relative humidity, and barometric pressure across multiple indoor environments.

The Aranet4 PRO is used throughout the globe to monitor air quality in corporate offices, universities, gymnasiums, museums,commercial buildings,or anywhere CO2 levels should be monitored for occupant comfort.

In addition, the Aranet4 PRO can connect wirelessly to your smartphone via Bluetooth by using your iOS or Android app to configure the device, view historical data, set alarms, and sensor reading frequency.

Get it on Google Play

Download on the AppStore


  • Large E-ink display to show CO2, Temp, %RH, and BARO
  • Wireless connectivity via Aranet4 PRO smartphone app (iOS or Android)
  • Opportunity to integrate into existing solutions, making Aranet4 Pro automate data export to your own databases
  • Configurable alarms and 3-color code indication
  • Built-in Data Logging capability
  • Access to Tech Support 
  • Fresh Air or AUTO/MANUAL Quick Calibration
  • Meets AB-841 Grant for California k-12 schools

The Aranet4 PRO version does not need a base station to function. It has all the communication capabilities as the Home; ie. Bluetooth and a screen, but it ALSO has a radio transceiver to communicate to the base.


This device will NOT meet requirements for CO2 safety monitoring which requires a Fixed/Wall mounted, hard-wired alarm per the NBIC, NFPA, or IFC regulations. Refer to our CO2 Safety Products page for devices that meet your needs.

Call us at (877) 678-4259 toll-free or email us to speak with our technical sales team about purchasing the correct device. 


  • CO2 Measurement Range: 0-9999ppm
  • Accuracy: 0-2000ppm, ±50ppm ± 3% reading: 2001-9999ppm ±10% of reading
  • Data Transmission: 1, 2, 5, or 10 minutes
  • Temperature Range: 0°C to 50°C (32°F to +122°F)
  • Relative Humidity: 0 ~ 85% RH 
  • Atmospheric Pressure: 0.3 to 1.1 atm (4.4 to 16.0 psi)
  • CO2 measurement calibration: Automatic or Manual (at 420ppm)
  • Operating environment: Indoor Use
  • Data protection: Data encryption
  • Display: Date, Clock, Battery, CO2, Temp, %RH, Baro
  • Power Supply: 2 AA Alkaline batteries
  • Lifespan: up to 2 years
  • Compatible Base Stations: Aranet PRO (from v1.3.2)
  • Dimensions: 2.716" (l)  x 2.76" (w) x 0.94" (h) (70 x 70 x 24 mm)
  • Weight: 3.7oz (104g)


  • Aranet4 PRO Indoor Air Quality Monitor
  • 2 AA Alkaline Batteries
  • User's Manual and Quick Start Guide



Aranet Cloud is an industrial-grade solution for Aranet IoT ecosystems’ remote management. Personalize your data with custom dashboards, graphs, and user management.

  • Possible upgrade to the Aranet Cloud, network with a virtually limitless number of Aranet4 devices from different locations, with advanced analytics, visualizations, and more. 


  • Aranet PRO Base Station - designed to be utilized specifically with the Aranet4 PRO Indoor Air Quality Monitor, in order to view, analyze, and compare data in real-time while deployed within the line of sight range up to 1.9 mi. / 3 km. (Dependent upon your sensor quantity, the Aranet Pro Base Station comes in three Aranet Pro Base versions - Aranet Pro Base 12, Aranet Pro Base 50, and Aranet Pro Base 100.
  • AR-4Mount Aranet AntiTheft Wall Mount - The Aranet4 Home and Pro sensors can also be wall-mounted with the help of the (AR-4Mount) Aranet AntiTheft Wall Mount. The wall mount uses a security Torx screw that needs a screwdriver with a security Torx T15 to insert bit and remove it. The anti-theft wall mount option is an ideal solution for applications such as classrooms, office buildings, homes, or anywhere individuals need to ensure that the sensor would not be lost or stolen. 
  • AR-4SDriver Aranet Screw Driver - designed to be utilized with any of the AntiTheft Wall Mount accessories for easy installation and proper wall-mount fixture.
  • Data Sheets

  • Manuals

  • Technical Documents

  • Videos

  • Additional Resources

  • Case Studies

Customer Reviews

Based on 3 reviews
James Dowling
Great device

Totally thrilled with it

Brian Suggs
Great assessment tool

A screen shot of meter creates nice content in my reports.

Michelle C
great service

smooth ordering process, quick delivery, great price, works well- thanks so much!

"Easy to install, easy to set up, and easy calibration - just what I was looking for."

- Phillip Farrar
Water Plant Superintendent

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