1. Introduction
This manual provides essential information for the proper assembly, operation, and maintenance of your Whadda WMMI211 Air Quality Monitor. Please read these instructions carefully before using the device to ensure safe and efficient performance. The WMMI211 is designed to measure various environmental parameters including equivalent CO2 (eCO2), total volatile organic compounds (TVOC), barometric pressure, temperature, and humidity.
2. Safety Information
- Keep the device away from water and high humidity environments.
- Do not expose the device to extreme temperatures or direct sunlight for prolonged periods.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to open or modify the device. Refer all servicing to qualified personnel.
- Use only the specified power adapter or USB cable for power supply.
3. Package Contents
Verify that all components listed below are present in your package:
- Main circuit board with display
- Environmental sensor module
- Wooden enclosure panels
- USB power cable
- Connecting wires/ribbon cable
- Screws and nuts for assembly
- Small screwdriver (if included)
Figure 3.1: All components of the Whadda WMMI211 Air Quality Monitor kit, including circuit boards, display, wooden panels, cables, and fasteners.
4. Setup and Assembly
The Whadda WMMI211 is provided as a kit requiring assembly. Follow these steps carefully:
- Prepare Components: Unpack all components and identify each part as per the package contents list.
- Assemble Enclosure: Carefully interlock the wooden panels to form the main enclosure. Ensure the display opening is correctly oriented.
- Mount Main Board: Secure the main circuit board into the designated slots or standoffs within the enclosure using the provided screws and nuts.
- Connect Display: Connect the display module to the main circuit board using the ribbon cable. Ensure the connection is firm and correctly oriented.
- Install Sensor Module: Connect the environmental sensor module to the main board using the appropriate connecting wires. Position the sensor module in its designated area, often with ventilation slots.
- Secure Panels: Once all internal components are connected, secure the remaining wooden panels, ensuring all screws are tightened gently to avoid damaging the wood.
- Power Connection: Connect the USB power cable to the device's USB port and then to a suitable USB power source (e.g., a computer USB port or a 5V USB power adapter).
Figure 4.1: Front view of the fully assembled Whadda WMMI211 Air Quality Monitor, showing the display and USB power connection.
Figure 4.2: Side view of the assembled Whadda WMMI211, highlighting the wooden enclosure and fasteners.
Figure 4.3: Bottom view of the assembled Whadda WMMI211, showing ventilation slots for sensor operation.
5. Operating Instructions
Once assembled and powered, the Whadda WMMI211 will automatically begin to display environmental readings.
- Power On: Connect the USB cable to a power source. The device will power on automatically and the display will illuminate.
- Initial Warm-up: Allow the device approximately 5-10 minutes for the sensors to stabilize and provide accurate readings.
- Reading the Display: The display shows various parameters with corresponding icons:
- eCO2: Equivalent Carbon Dioxide levels (in ppm).
- TVOC: Total Volatile Organic Compounds (in ppb).
- Temperature: Ambient temperature (in °C or °F).
- Humidity: Relative humidity (in %).
- Pressure: Barometric pressure (in hPa or mbar).
- Navigation/Settings: If buttons are present (as indicated by a gear icon on the display), they typically allow you to cycle through display modes, adjust brightness, or access calibration options. Refer to the on-screen prompts for specific functions.
- Power Off: Disconnect the USB power cable to turn off the device.
6. Maintenance
- Cleaning: Gently wipe the device's exterior with a soft, dry cloth. Do not use liquid cleaners or abrasive materials. Ensure no dust or debris obstructs the sensor ventilation slots.
- Storage: When not in use, store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
- Sensor Calibration: The sensors are typically factory-calibrated. If you suspect inaccurate readings, consult the manufacturer's support for potential recalibration procedures.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | No power supply or faulty connection. | Check USB cable connection and power source. Try a different USB port or adapter. |
| Display is blank or shows errors. | Loose display cable or software issue. | Ensure display ribbon cable is securely connected. Power cycle the device. |
| Readings appear inaccurate. | Sensor warm-up period not complete, or environmental interference. | Allow 5-10 minutes for sensor stabilization. Ensure device is not near strong air currents, heat sources, or chemical fumes. |
| Device is unresponsive. | Temporary software glitch. | Disconnect power for 10 seconds, then reconnect to perform a hard reset. |
8. Specifications
- Model Number: WMMI211
- Manufacturer: Whadda
- Product Dimensions: 17.78 x 12.7 x 6.35 cm
- Item Weight: 425.24 g (15 Ounces)
- Special Features: Measures eCO2, TVOC, Barometric Pressure, Temperature, Humidity
- Power Supply: USB 5V (via USB cable)
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official Whadda website or contact your retailer. Keep your purchase receipt as proof of purchase.
