# BREATHE Airmonitor Plus Indoor Air Quality Monitor, CO2 PM2.5 App, Gen 2

Source: https://www.ranked10.co.uk/home/best-air-quality-monitor/breathe-airmonitor-plus-gen2
Ranked #7 in "Best Air Quality Monitor 2026: Fewer Numbers, Better Sensors": https://www.ranked10.co.uk/home/best-air-quality-monitor

- Price: £119.99 (checked on Amazon UK on 2026-09-11)
- Amazon rating: 4.0 from 437 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0CLYRBRSB?tag=ranked10-21

The Airmonitor Plus Gen 2 puts eight readings into 113g: CO2, PM1, PM2.5, PM10, TVOC, formaldehyde, temperature and humidity, with 90 days of history in the app, CSV export and up to six hours of battery. The listing names NDIR for CO2 and laser sensing for particles, which are the two sensor technologies that matter in this category.

It is seventh for two reasons: 4.0 stars with 12 per cent one-star is the weakest record among the mid-priced monitors here, and the specification table contradicts the copy twice, listing the sensor type as TVOC and the power source as corded electric.

## Specification

| Field | Value |
|---|---|
| What it measures | CO2, PM1, PM2.5, PM10, TVOC, HCHO, temp, humidity |
| Sensors as listed | NDIR for CO2, laser for particles |
| Sensor type field | TVOC |
| Power source field | Corded electric |
| Ratings | 4.0 from 437 |
| History | 90 days in the app, CSV export |

## Questions people ask

**Is it battery or mains powered?**

The specification says corded electric and the bullets promise up to six hours of portable use. Expect to charge it and use it on battery between charges.

**Does it measure PM2.5?**

Yes, along with PM1 and PM10, using laser particle sensing according to the listing.

**What does the NDIR sensor measure?**

CO2. It is the same technology the Aranet4 uses, which is the reassuring part of this listing.

**Why does the sensor type field say TVOC?**

It appears to be a data entry error: TVOC is one of the eight readings, not the sensor that drives CO2 or particles.

**How much history does the app keep?**

90 days, with CSV export, which is longer than the cheap meters here store on the device.

**How many ratings does it have?**

437 at the time of collection, averaging 4 stars, with 60 per cent five-star and 12 per cent one-star.