Option 1 · Apollo Automation
Apollo MSR-2 with CO2
Catalog update date not recorded
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Apollo MSR-2 with CO2 vs Aranet4 HOME
Understand the differences. Decide what matters to your home.
Build another comparison →Before you compare every specification
Key differences between Apollo MSR-2 with CO2 and Aranet4 HOME
A summary of selected recorded differences between these air quality monitors. Check the full specification table below for details and conditions.
Feature differences among your selected devices
- Humidity Alerts (alerts): Apollo MSR-2 with CO2 — No; Aranet4 HOME — Yes.
- 2.4 GHz Wi-Fi (connectivity): Apollo MSR-2 with CO2 — Yes; Aranet4 HOME — No.
- Bluetooth (connectivity): Apollo MSR-2 with CO2 — No; Aranet4 HOME — Yes.
- Screen (display): Apollo MSR-2 with CO2 — No; Aranet4 HOME — Yes.
Specifications to check side by side
- Wired (power): Apollo MSR-2 with CO2 — USB-C; Aranet4 HOME — No.
Information still to confirm
- 8 of 46 comparison fields lack a resolved value for at least one selected device. Missing information is not evidence that a feature is absent.
- Check the full table and manufacturer documentation before ruling out a device.
These observations are derived from recorded catalog data and have not all been independently verified. Confirm details with the manufacturer before purchasing.
Compare capabilities, compatibility and setup requirements.
What the catalog tells us
Understand the tradeoffs.
These counts describe the available data, not a quality score. More features do not automatically make a better device.
9differences with recorded values for every device
8rows with missing or unspecified information
Your priorities, side by side
Focus on what changes.
Mark the specifications you care about. Open manufacturer sources for verification scope; fields without citations remain catalog data. Expand notes for other qualifications.
Showing 46 of 46 rows. “Not recorded” does not mean “No”.
Alerts
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- Yes
Catalog note
The Aranet Home app notifies when the battery is low on battery-powered devices.
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
Connectivity
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
Display
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- Not recorded
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- Not recorded
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- E-Ink
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- No
Features
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
Catalog note
Store up to 90-day measurement history
Integrations
- Apollo MSR-2 with CO2
- No
Catalog note
Apollo ships ESPHome firmware aimed at Home Assistant and publishes no Alexa skill
- Aranet4 HOME
- No
Catalog note
Aranet sensors are Bluetooth instruments read by the Aranet app or the Aranet PRO base station, with no Alexa skill
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
Power
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- 4 years
- Apollo MSR-2 with CO2
- Not applicable / unspecified
- Aranet4 HOME
- 2x AA
- Apollo MSR-2 with CO2
- USB-C
- Aranet4 HOME
- No
Sensors
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- Yes
Manufacturer source
The optional SCD-40 sensor measures CO₂.
Apollo MSR-2 with CO2 manufacturer product page →- Source section
- Sensor options and component list
- Model
- Apollo MSR-2 with CO2
- Region
- Manufacturer product page; no universal regional compatibility implied
- Firmware
- Not specified by this source
- Checked
This applies only to the MSR-2 ordered with the CO₂ option; the base configuration does not include that sensor.
Document check only; not a hands-on test or verification of every regional or firmware variant.
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- Yes
- Aranet4 HOME
- Yes
- Apollo MSR-2 with CO2
- No
- Aranet4 HOME
- No
- Apollo MSR-2 with CO2
- Yes
Catalog note
Use the UV sensor to let you know how much sun is coming through the window.
- Aranet4 HOME
- No
| Specification | Apollo MSR-2 with CO2 | Aranet4 HOME |
|---|---|---|
| Alerts | ||
| Yes | Yes | |
| No | Yes | |
| Not applicable / unspecified | YesCatalog noteThe Aranet Home app notifies when the battery is low on battery-powered devices. | |
| Yes | Yes | |
| Connectivity | ||
| Yes | No | |
| No | No | |
| No | Yes | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| Display | ||
| Not applicable / unspecified | No | |
| No | Yes | |
| Not applicable / unspecified | Not recorded | |
| Not applicable / unspecified | Not recorded | |
| Not applicable / unspecified | E-Ink | |
| Not applicable / unspecified | No | |
| Features | ||
| Yes | Yes | |
| Yes | YesCatalog noteStore up to 90-day measurement history | |
| Integrations | ||
NoCatalog noteApollo ships ESPHome firmware aimed at Home Assistant and publishes no Alexa skill | NoCatalog noteAranet sensors are Bluetooth instruments read by the Aranet app or the Aranet PRO base station, with no Alexa skill | |
| No | No | |
| No | No | |
| Yes | Yes | |
| No | No | |
| No | No | |
| Power | ||
| Not applicable / unspecified | 4 years | |
| Not applicable / unspecified | 2x AA | |
| USB-C | No | |
| Sensors | ||
| Yes | No | |
| No | No | |
| Yes | Yes | |
| No | No | |
YesManufacturer sourceThe optional SCD-40 sensor measures CO₂. Apollo MSR-2 with CO2 manufacturer product page →
This applies only to the MSR-2 ordered with the CO₂ option; the base configuration does not include that sensor. Document check only; not a hands-on test or verification of every regional or firmware variant. | Yes | |
| No | Yes | |
| No | No | |
| Yes | No | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| No | No | |
| Yes | Yes | |
| No | No | |
YesCatalog noteUse the UV sensor to let you know how much sun is coming through the window. | No | |
Know what’s behind the comparison.
The table matches specifications by section and field. It preserves notes, separates missing data from explicit “No” values, and keeps qualifications attached to their values. No overall winner is assigned from feature counts.
Read our comparison methodology