Choose between numeric local CO2 viewing and a broader sensor set with hub-dependent remote access.
The decision in brief
How the options differ
Aranet4 HOME shows numbers on its own display and supports nearby app use. Wave Plus includes radon and VOC-related sensing but uses a glow ring for local indication. Both need their documented connection conditions for app access; Bluetooth alone is not internet access.
By CompareFoundry · Published · Editorial review · Manufacturer documentation, not hands-on testing.
The buying guide
Package and specification details
Choose the information needed without a phone
Aranet4 HOME has a numeric e-ink display. Wave Plus offers a red/yellow/green indicator, with detailed values in its app. Decide whether you need an immediate number or a simple indicator where the device will sit. An app feature does not change the physical display supplied with the product.
Both document direct CO2 sensing. Wave Plus also includes radon and TVOC, while Aranet4 HOME focuses on CO2, temperature, humidity and pressure. Neither selected sensor set includes PM2.5. A CO2 number cannot replace a missing particle reading, and a VOC signal does not identify a specific chemical.
Aranet documents optional Bluetooth app synchronization and export. Wave Plus synchronizes near the phone unless paired with a compatible powered View hub for internet access. That hub is not included in the selected single-unit package. No guaranteed battery lifetime, remote-service retention or installed integration result is inferred from these specifications.
These manufacturer specifications do not establish measured performance, noise, long-term reliability or running cost. We have not independently tested these products. Check current prices, stock and operating-space instructions with the seller and manufacturer.
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External rating
Aranet4 HOME (US selection)Not checked yet
Wave Plus (US selection)
4.8 out of 5from 76 ratings · Airthings store ↗ · Checked October 23, 2026.
Direct CO2 sensing
Whether a dedicated CO2 sensing method is documented.
Do not substitute derived eCO2 from another gas sensor for a direct CO2 measurement.
Aranet4 HOME (US selection)YesSource · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)YesSource · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
CO2 method and revision
The manufacturer-described CO2 sensing technology.
The method alone does not establish calibrated accuracy or identical behavior between revisions.
Aranet4 HOME (US selection)NDIR CO2 sensing.Source · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)NDIR CO2 sensor.Source · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
PM2.5 sensing
Whether a particle sensor for PM2.5 is documented.
CO2, particles and gases are different quantities. One sensor does not measure all of them.
Aranet4 HOME (US selection)NoSource · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)NoSource · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Radon sensing
Whether the product includes a documented radon sensor.
Keep sensor presence separate from professional test certification, local rules and interpretation of results.
Aranet4 HOME (US selection)NoSource · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)YesSource · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
VOC signal type
The documented VOC-related output or its absence.
A relative index, total-VOC estimate and compound-specific concentration are not interchangeable.
Aranet4 HOME (US selection)No VOC sensing in the documented CO2, temperature, humidity and pressure sensor set.Source · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)TVOC measurement; no identification of individual chemical compounds.Source · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Temperature and humidity
Whether both temperature and relative humidity sensing are documented.
Use the placement and operating conditions in the manual; a shared room does not imply identical readings.
Aranet4 HOME (US selection)YesSource · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)YesSource · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Numeric display on the device
Whether the device itself displays numeric readings.
A coloured indicator is not a numeric display. App readings are a separate viewing route.
Aranet4 HOME (US selection)YesSource · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)NoSource · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Data connection
The documented local or internet connection path.
Bluetooth synchronization does not by itself provide remote access from outside the home.
Aranet4 HOME (US selection)Bluetooth to the Aranet Home app; local readings do not need Wi-Fi.Sources · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.Aranet: Aranet4 HOME app and export FAQChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)Bluetooth or Airthings SmartLink; it is not a standalone Wi-Fi device.Source · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Power and included equipment
Power source and relevant package equipment.
A supplied USB cable does not establish a supplied wall adapter. Battery life depends on usage and settings.
Aranet4 HOME (US selection)Battery-operated device; confirm the current US box and replacement-battery requirements.Source · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)Two AA alkaline batteries, mounting screw and manual are listed in the standard package.Source · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
History, export and service conditions
Documented ways to view or retain data and the applicable service limits.
Local readings, a cloud dashboard, export and commercial API rights are different entitlements.
Aranet4 HOME (US selection)Nearby app synchronization and export are documented. HOME is not the PRO/base-station product.Sources · 2026-10-11Aranet: Aranet4 HOME product and measured quantitiesChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.Aranet: Aranet4 HOME app and export FAQChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Wave Plus (US selection)Nearby Bluetooth app sync. Remote access requires a compatible powered View hub, not just the Wave unit.Source · 2026-10-11Airthings: Wave Plus US model 2910 specificationsChecked 2026-10-11. We reviewed the official page text on the check date. Checkout options were not verified.
Questions to check before buying
Aranet4 HOME (US selection)Read the source notes for the exact package and operating conditions.
Wave Plus (US selection)Read the source notes for the exact package and operating conditions.
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