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BM3 PM2.5 TVOC CO2 HCHO AQI Air Quality Monitor
BM3 PM2.5 TVOC CO2 HCHO AQI Air Quality Monitor
With the BM3 PM2.5 TVOC CO2 HCHO AQI Air Quality Monitor, you can observe the humidity, temperature, carbon dioxide, TVOC, and HCHO levels in the air via the display. It can be charged with a Type-C cable. The cable is included in the product contents. An intelligent alarm system based on air quality is also available.
To operate the product, you need to press and hold the middle button. You can release the button when the data appears on the screen.
Similarly, if you press and hold again, the device will turn off.WiFi Configuration
To enter the WiFi configuration interface, press and hold the left button. A QR code will be displayed on the device.
You can scan the QR code and follow the instructions to connect to the WiFi network, allowing you to view the data remotely in the mobile app.Settings Interface
To enter the settings interface, long press the right button ; Here you can configure standby mode, sensor calibration, and other operations.
Device calibration instructions: It is recommended not to calibrate new devices. If you notice a change in formaldehyde and TVOC data after six months of use, you can select the calibration function from the settings. Calibration should be performed in an open environment with good air quality.
A short press of the middle button returns to the main screen.
Technical Specifications
- Product Model: BM3
- Input Voltage: 5V (Rechargeable - Type-C)
- Charging Current: 1A
- CO2 Detection Range: 0 ~ 5000 PPM
- HCHO Detection Range: 0 ~ 2 mg/m3
- TVOC Detection Range: 0 ~ 5 mg/m3
- PM2.5 Detection Range: 0-1000ug/m³
- Temperature Sensing Range: -20 ~ 50°C
- Humidity Sensing Range: 0 ~ 99.9% RH
- Charging Port: Type-C
- Sensor: WZ-H3
- Dimensions: 105×39.2×69.6mm
Notes
- During first use, the formaldehyde sensor may be poisoned due to excessive formaldehyde levels in the enclosed space during transport. Therefore, the formaldehyde value may be significantly high or remain at zero after being removed from its packaging. In this case, allow the device to rest for at least 12 hours before continuing with the tests; the formaldehyde sensor will gradually return to normal operation. (Please note that formaldehyde calibration is not required.) Relative cross-interference characteristics of formaldehyde: CO 1%, H2S no data, H2 0.1%, SO2 12%, NO2 no data, NO no data, C2H4 1%, C2H4 no data, NH3 0%, CO2 0%, methanol/ethanol 50%, phenols 7%, water vapor 0%. When detecting formaldehyde, keep away from volatile substances such as alcohol, vinegar, perfume, and air fresheners to prevent cross-interference. It is recommended to perform the test during daylight hours when no cooking is required. Keep away from silicone vapors, shampoo, etc. Do not blow excessive amounts of contaminants onto the sensor, as this can easily cause electrochemical overload. For stable operation of the device, it must be used in an upright position on a flat surface. Do not obstruct the air inlet/outlet during use to prevent numerical deviations. For formaldehyde testing, doors and windows must be closed at least 12 hours before testing (international requirement). Using multiple test points and averaging the results will provide more accurate values. Dust storms and other weather conditions besides smoke, such as sand and gravel, can affect laser detectors, causing PM values to decrease. Do not use the product for extended periods in extreme environments such as cold, hot, dusty, humid, or dry conditions. This may shorten the equipment's lifespan.The device is not waterproof; please avoid using it in rainy or wet environments. The device is not waterproof; please avoid using it in rainy or wet environments. The device is not waterproof; please avoid using it in rainy or wet environments.
