1. Air Quality Kit is an integrated, low-power air quality monitoring device designed to provide comprehensive air quality monitoring solutions 2. It features multiple components, including the SEN55 air quality sensor and the SCD40 CO2 sensor, enabling the monitoring of PM1.0, PM2.5, PM4, PM10 particles, temperature, humidity, VOC, and CO2 concentrations. Powered by the StampS3 main controller and equipped with 8M Flash memory, Air Quality ensures efficient data processing and storage capabilities 3. The device comes with a 1.54-inch e-ink display with a resolution of 200x200, providing a clear visual representation of the data. Even in the event of a power outage, the final data screen remain visible, ensuring continuous visualization 4. To extend monitoring capabilities, Air Quality is equipped with a 450mAh battery and an low-power power management circuit. This allows the device to enter sleep mode and be awakened on a scheduled basis, conserving energy and prolonging battery life. 5. Out of , Air Quality's firmware is preconfigured to upload data to M5's EZDATA cloud platform, which automatically generates monitoring pages, providing users with convenient remote access and data management. Users can monitor air quality data anytime, anywhere through the cloud-based access. Power On: You can power on the device by pressing the "WAKE" button or through the -triggered signal for wake-up. After completing the wake-up signal, in the program initialization, it is necessary to set the hold (G46) pin to a high level (1) to maintain power; otherwise, the device re-enter sleep mode. Power Off: To power off when not externally powered via USB, the button. Alternatively, when running the program without external USB power, set HOLD (GPIO46) to 0 to achieve a power-off shutdown. Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color:As Shown Material:ABS Package Contents: 1 x Air Quality Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.