1. Introducció
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. Informació de seguretat
- Mantingueu el dispositiu allunyat de l'aigua i d'ambients amb molta humitat.
- No exposeu el dispositiu a temperatures extremes ni a la llum solar directa durant períodes prolongats.
- Eviteu deixar caure o sotmetre el dispositiu a forts impactes.
- No intenteu obrir ni modificar el dispositiu. Envieu totes les tasques de manteniment a personal qualificat.
- Use only the specified power adapter or USB cable for power supply.
3. Contingut del paquet
Verifiqueu que tots els components que s'enumeren a continuació siguin presents al vostre paquet:
- Main circuit board with display
- Environmental sensor module
- Wooden enclosure panels
- Cable d'alimentació USB
- Connecting wires/ribbon cable
- Cargols i femelles per al muntatge
- Small screwdriver (if included)

Figura 3.1: All components of the Whadda WMMI211 Air Quality Monitor kit, including circuit boards, display, wooden panels, cables, and fasteners.
4. Muntatge i muntatge
The Whadda WMMI211 is provided as a kit requiring assembly. Follow these steps carefully:
- Preparació dels 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.
- Connecta la pantalla: Connect the display module to the main circuit board using the ribbon cable. Ensure the connection is firm and correctly oriented.
- Instal·leu el mòdul de sensors: 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.
- Panells segurs: Once all internal components are connected, secure the remaining wooden panels, ensuring all screws are tightened gently to avoid damaging the wood.
- Connexió d'alimentació: 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).

Figura 4.1: Davant view of the fully assembled Whadda WMMI211 Air Quality Monitor, showing the display and USB power connection.

Figura 4.2: lateral view of the assembled Whadda WMMI211, highlighting the wooden enclosure and fasteners.

Figura 4.3: A baix view of the assembled Whadda WMMI211, showing ventilation slots for sensor operation.
5. Instruccions de funcionament
Once assembled and powered, the Whadda WMMI211 will automatically begin to display environmental readings.
- Encès: Connect the USB cable to a power source. The device will power on automatically and the display will illuminate.
- Escalfament inicial: Allow the device approximately 5-10 minutes for the sensors to stabilize and provide accurate readings.
- Lectura de la pantalla: The display shows various parameters with corresponding icons:
- eCO2: Equivalent Carbon Dioxide levels (in ppm).
- TVOC: Total Volatile Organic Compounds (in ppb).
- Temperatura: Ambient temperature (in °C or °F).
- Humitat: Relative humidity (in %).
- Pressió: 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.
- Apagar: Disconnect the USB power cable to turn off the device.
6. Manteniment
- Neteja: 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.
- Emmagatzematge: Quan no l'utilitzeu, guardeu el dispositiu en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- Calibració del sensor: The sensors are typically factory-calibrated. If you suspect inaccurate readings, consult the manufacturer's support for potential recalibration procedures.
7. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| El dispositiu no s'encén. | Sense font d'alimentació o connexió defectuosa. | 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. |
| El dispositiu no respon. | Error temporal de programari. | Disconnect power for 10 seconds, then reconnect to perform a hard reset. |
8. Especificacions
- Número de model: WMMI211
- Fabricant: Vaja
- Dimensions del producte: 17.78 x 12.7 x 6.35 cm
- Pes de l'article: 425.24 g (15 unces)
- Característiques especials: Measures eCO2, TVOC, Barometric Pressure, Temperature, Humidity
- Font d'alimentació: USB 5V (via USB cable)
9. Garantia i Suport
For warranty information, technical support, or service inquiries, please refer to the official Whadda weblloc web o contacteu amb el vostre distribuïdor. Conserveu el rebut de compra com a comprovant de compra.





