Aranet4 PRO CO2 Monitor

Aranet

Aranet4 PRO CO2 Monitor

SKU: HMS-014

$380.00 incl. GST

Professional wireless indoor air-quality monitor measuring CO2, temperature, relative humidity and atmospheric pressure, with Bluetooth and Aranet PRO base-station connectivity.

Key features

  • Measures carbon dioxide / CO2 concentration
  • Measures temperature
  • Measures relative humidity
  • Measures atmospheric pressure
  • CO2 measurement range up to 9,999 ppm
  • Uses precision CO2 sensing with pressure compensation
  • Real-time environmental readings
  • Energy-efficient e-ink display
  • Bluetooth connectivity
  • Compatible with the Aranet Home mobile app
  • Includes Aranet Sub-GHz wireless radio
  • Designed to communicate with Aranet PRO base stations
  • Supports professional multi-sensor monitoring systems
  • Line-of-sight Aranet radio range up to 3 km under suitable conditions
  • Configurable measurement and transmission intervals
  • Historical data available through the Aranet Home app
  • Battery-powered operation
  • Powered by two AA batteries
  • Portable and wireless
  • Suitable for schools, offices, healthcare environments and larger organisations
  • Designed for long-term indoor environmental monitoring
Technical data sheetManufacturer product page

Product information

The Aranet4 PRO is a professional wireless indoor air-quality sensor designed for organisations, schools, offices, healthcare settings and other environments where reliable CO2 and environmental monitoring is required. It measures carbon dioxide concentration, temperature, relative humidity and atmospheric pressure, providing real-time readings directly on its energy-efficient e-ink display. In addition to Bluetooth connectivity for use with the Aranet Home app, the PRO model includes Aranet Sub-GHz wireless technology for communication with an Aranet PRO base station. This allows multiple Aranet sensors to be deployed across larger buildings or sites and centrally monitored through the Aranet PRO ecosystem. The sensor is battery powered, portable and designed for long-term indoor environmental monitoring without requiring mains power at the measurement location.

BrandAranet
Product typeProfessional wireless CO2 and indoor air-quality monitor
Pack size1 monitor
StylePortable battery-powered wireless environmental sensor
Store SKUHMS-014
Packed weightTo be confirmed

Standards & classification

The Aranet4 PRO is an indoor environmental monitoring sensor manufactured by SAF Tehnika / Aranet.

The manufacturer specifies measurement of carbon dioxide concentration, temperature, relative humidity and atmospheric pressure.

The PRO model incorporates Aranet Sub-GHz ISM-band wireless radio for transmission of sensor measurements to an Aranet PRO base station.

This product is an environmental monitoring instrument and is not a medical diagnostic device. It does not directly detect viruses, bacteria or other airborne pathogens.

CO2 concentration in occupied indoor environments can be useful as an indicator of ventilation performance and the accumulation of exhaled air, but CO2 readings should be interpreted alongside occupancy, ventilation design and other environmental factors.

Fit & sizing guidance

No facial fit or sizing requirements apply to this product.

For representative indoor measurements, place the Aranet4 PRO in the occupied zone of the room rather than directly beside an open window, ventilation supply outlet, heater, air conditioner or a person's face.

For Aranet PRO system installations, sensor positioning should also take into account reliable wireless communication with the Aranet PRO base station.

The manufacturer specifies a line-of-sight Aranet radio range of up to approximately 3 km under suitable conditions. Actual range can be reduced by walls, building materials, interference and site layout.

Directions for use

1. Install the two supplied AA batteries if required.
2. Position the Aranet4 PRO in the indoor area to be monitored.
3. Allow the device to stabilise and begin displaying current environmental readings.
4. View CO2, temperature and humidity readings directly on the e-ink display.
5. If desired, pair the unit by Bluetooth with the Aranet Home app for configuration, historical data and additional information.
6. For professional multi-sensor deployments, connect the sensor to a compatible Aranet PRO base station according to the Aranet setup instructions.
7. Configure the required measurement and transmission interval for the intended application.
8. Monitor CO2 trends and environmental conditions over time rather than relying only on a single instantaneous reading.
9. Perform calibration only when required and in accordance with the manufacturer instructions.
10. Keep device firmware updated where recommended by Aranet.

Always follow the current Aranet documentation for setup, calibration, radio configuration and operation.

Warnings & use limitations

Do not use for

Storage

Store and operate the Aranet4 PRO in a clean, dry indoor environment within the environmental limits specified by Aranet. Protect the device from water, condensation, excessive dust, direct sunlight, physical damage and harsh chemical exposure. Avoid prolonged exposure to volatile organic compounds, acids, bases, ammonia or similar substances. Remove batteries for extended storage where appropriate and follow current Aranet guidance for battery handling, storage and maintenance.

Specifications

BrandAranet
ProductAranet4 PRO
Product typeProfessional wireless CO2 and environmental sensor
CO2 measurementYes
CO2 range0-9,999 ppm
CO2 resolution1 ppm
CO2 accuracy±(30 ppm + 3% of reading) within manufacturer-specified conditions
Temperature measurementYes
Temperature range0-50°C
Temperature resolution0.1°C
Temperature accuracy±0.3°C
Relative humidity measurementYes
Relative humidity range0-85%
Relative humidity resolution1%
Relative humidity accuracy±3%
Atmospheric pressure measurementYes
Atmospheric pressure range600-1100 hPa
Atmospheric pressure resolution1 hPa
Atmospheric pressure accuracy+3 hPa / -2 hPa
DisplayE-ink
BluetoothYes
Bluetooth compatibilityBluetooth 4.1 and above
Aranet Sub-GHz radioYes
Aranet PRO base station compatibilityYes
Maximum stated Aranet radio line-of-sight range3 km
Configurable data transmission interval1, 2, 5 or 10 minutes
Radio data protectionXXTEA encryption
Power source2 x AA batteries
Batteries includedYes
Device dimensions71 mm x 71 mm x 24 mm
Device weight104 g including batteries
Enclosure materialPolycarbonate
Ingress protectionIP20
Operating temperature0-50°C
Operating relative humidity0-85%
Maximum recommended altitudeBelow 4,000 m
Australia / New Zealand radio product numberTDSPC0U3
Indoor useYes
Packed shipping dimensionsTo be physically confirmed by HMS
Packed shipping weightTo be physically confirmed by HMS

Frequently asked questions

What does the Aranet4 PRO measure?

The Aranet4 PRO measures carbon dioxide concentration, temperature, relative humidity and atmospheric pressure.

What is the main difference between Aranet4 HOME and Aranet4 PRO?

Both measure the same main environmental parameters, but the PRO model includes Aranet Sub-GHz wireless communication for integration with an Aranet PRO base station and larger multi-sensor monitoring systems.

Does the Aranet4 PRO work without a base station?

Yes. The sensor can display readings locally and can connect by Bluetooth to the Aranet Home app. A compatible PRO base station is required when the sensor is being used as part of an Aranet PRO centralised monitoring system.

What is the CO2 measurement range?

The manufacturer specifies a CO2 range from 0 to 9,999 ppm.

How accurate is the CO2 sensor?

Aranet specifies CO2 accuracy of ±30 ppm plus 3% of the reading within its defined operating and measurement conditions.

How far can the Aranet4 PRO communicate with a base station?

Aranet specifies a maximum line-of-sight Sub-GHz wireless range of approximately 3 km under suitable conditions. Buildings, walls and interference can reduce real-world range.

Does it use Bluetooth?

Yes. The Aranet4 PRO supports Bluetooth and is compatible with devices meeting Bluetooth 4.1 or later.

Can I use the Aranet Home app with the PRO sensor?

Yes. The Aranet4 PRO can connect to the Aranet Home app for device configuration and access to historical measurements.

What is the advantage of connecting it to an Aranet PRO base station?

A base station enables multiple compatible Aranet sensors to be monitored together across a building or site, providing centralised data collection and management.

Does the Aranet4 PRO require mains power?

No. The sensor itself is powered by two AA batteries.

Are batteries included?

Yes. The manufacturer states that the package includes two AA alkaline batteries.

How long do the batteries last?

Battery life varies according to measurement interval, Bluetooth use and battery type. Manufacturer data shows that longer measurement intervals and reduced Bluetooth activity can substantially extend battery life.

Can the measurement interval be changed?

Yes. The manufacturer specifies selectable transmission intervals of 1, 2, 5 or 10 minutes.

Does the Aranet4 PRO store historical data?

Yes. Historical measurements can be accessed through the Aranet Home app, with available history depending on the selected measurement interval.

Does the Aranet4 PRO detect viruses or COVID-19?

No. It measures environmental parameters including CO2 but does not directly detect viruses or other pathogens.

Does it measure particulate pollution?

No. The Aranet4 PRO does not directly measure particulate matter such as PM2.5.

Does it detect carbon monoxide?

No. It is a carbon dioxide monitor, not a carbon monoxide alarm.

Where should the sensor be positioned?

Place it in a representative occupied area and away from direct ventilation outlets, open windows, heaters and a person's immediate breathing zone.

Can the Aranet4 PRO be used outdoors?

It is rated IP20 and is intended for suitable indoor environments. It should not be exposed to rain or unsuitable outdoor conditions.

Can the sensor be recalibrated?

Yes. Aranet provides automatic and manual CO2 calibration options. Manual calibration requires exposure to fresh outdoor air and should be performed according to the manufacturer instructions.

How many Aranet4 PRO sensors can be used together?

The number of sensors supported in a central system depends on the Aranet PRO base station model and licence. HMS will list compatible base-station options separately.

Important product information

Respirator selection, fit and use depend on the hazard, workplace conditions and the wearer. Read and follow the manufacturer’s instructions supplied with the product. Where respiratory protection is required for work, follow the applicable workplace respiratory protection program and fit-testing requirements.