Air Quality Kit v1.1 with M5StampS3A (SEN55, SCD40)

The M5Stack Air Quality v1.1 is a small, low-power air monitor using the Stamp-S3A for better efficiency and Wi-Fi performance. It has a 1.54” e-ink display and built-in sensors for PM1.0–PM10, temperature, humidity, VOCs, and CO₂. A 600mAh battery with sleep and wake functions supports long-term use, and data can be uploaded to Ezdata Cloud. With its magnetic base and LEGO-compatible mounting holes, it’s easy to set up in homes, schools, or industrial environments.

The M5Stack Air Quality v1.1 is an integrated low-power air quality monitoring device. Compared to the previous generation, the new version adopts the Stamp-S3A master control, with optimizations and improvements in overall power consumption and Wi-Fi antenna design. The device features a 1.54" e-ink screen with a 200x200 resolution. It is equipped with a multifunctional air quality sensor SEN55 and a CO2 sensor SCD40, capable of monitoring PM1.0, PM2.5, PM4, PM10 particulates, temperature, humidity, VOC, and CO2 concentration in the air. The built-in 600mAh lithium battery and RTC low-power power management circuit allow it to achieve sleep and timed wake-up functions. The factory firmware supports uploading air quality data to the M5Stack Ezdata cloud platform, providing users with a convenient remote data viewing function. The bottom structure offers LEGO-compatible mounting holes, a magnetic base, and 4 removable mounting lugs, supporting various mounting methods. Suitable for air monitoring in homes, schools, industrial sites, and medical environments.

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Features

* Stamp-S3A master control

* SEN55 and SCD40 sensors

* 1.54" e-ink screen (200 x 200 resolution)

* Built-in 600mAh lithium battery

* HY2.0-4P interface

* EZDATA cloud platform access

* RTC timed wake-up

* Development Platform

* UiFlow2

* Arduino IDE

* ESP-IDF

* PlatformIO

Specifications

Specification Parameter

Power Detection IC INA226, high-precision, bidirectional current / power monitoring IC

Voltage Detection Range DC 0 ~ 30V

Current Detection Range ±1A (bidirectional current measurement)

Communication Interface I2C @0x41

Operating Current DC 5.01V@16.55mA

Product Size 58.0 x 24.0 x 10.2mm

Product Weight 8.5g

Resources

* Documentation

Package Contents

* 1 x Air Quality v1.1

* 1 x User Manual