1. Introdução
Thank you for choosing the Xiaomi Smart Air Purifier 4. This device is designed to provide clean and healthy air in your home by effectively removing various airborne pollutants. Please read this manual thoroughly before use and retain it for future reference.

Image 1.1: Xiaomi Smart Air Purifier 4, front view.
2. Informações de segurança
To prevent electric shock, fire, or other damage, please read the following safety precautions carefully before using the appliance:
- Always use the power adapter provided with the device.
- Do not place the air purifier near heat sources or in direct sunlight.
- Mantenha o dispositivo longe de água ou outros líquidos. Não o utilize com as mãos molhadas.
- Ensure proper ventilation around the device. Do not block air inlets or outlets.
- Este aparelho pode ser usado por crianças com 8 anos ou mais e pessoas com capacidades físicas, sensoriais ou mentais reduzidas ou com falta de experiência e conhecimento, desde que tenham recebido supervisão ou instruções sobre o uso do aparelho de forma segura e entendam os perigos envolvidos.
- As crianças devem ser supervisionadas para garantir que não brinquem com o aparelho.
- Desligue o purificador de ar da tomada antes de limpá-lo ou realizar qualquer manutenção.
3. Produto acabadoview
The Xiaomi Smart Air Purifier 4 is equipped with advanced features to ensure optimal air quality.
Principais características:
- Filtração de alta eficiência: PCADR 500 m³/h and FCADR 185 m³/h, capable of removing 99.97% of particles as small as 0.3 microns, including pet dander, dust, pollen, smoke, and VOCs.
- Gerador de Íons Negativos: Helps to purify the air, creating a fresh indoor environment.
- Controle inteligente: Compatible with the Mi Home app, Google Assistant, and Amazon Alexa for convenient remote and voice control.
- Sensores de alta precisão: Integrated PM2.5 and PM10 laser sensors detect environmental influences in real-time.
- Display OLED: Real-time display of air quality (PM2.5, PM10), temperature, humidity, Wi-Fi status, and current operating mode.
- Vários modos de limpeza: Includes Automatic, Preferred, Sleep, Low, Medium, High, and Preferred.
- Fácil manutenção: The top air outlet grille is detachable for easy cleaning.
- Long-Lasting Filter: Filter lifespan of up to 12 months.
Componentes:
Familiarize yourself with the main parts of your air purifier:
- Top Air Outlet Grille
- OLED Display / Control Panel
- Air Inlet (sides and back)
- Filter Compartment (bottom rear)
- Porta do cabo de alimentação

Imagem 3.1: Terminadoview of the Xiaomi Smart Air Purifier 4 highlighting its performance.

Image 3.2: Illustration of the air purifier's filtration capability, trapping 99.97% of particles.
4. Configuração
Follow these steps to set up your air purifier:
- Desembale o dispositivo: Carefully remove the air purifier from its packaging. Remove all protective films and packaging materials.
- Escolha um local: Place the air purifier on a flat, stable surface. Ensure there is at least 20 cm of clearance from walls or other objects to allow for proper airflow. Avoid placing it in direct sunlight or near heat sources.
- Instale o filtro:
- Open the filter compartment cover, usually located at the rear or bottom of the unit.
- Retire o novo filtro da embalagem plástica protetora.
- Insert the filter into the compartment, ensuring it is correctly oriented.
- Feche bem a tampa do compartimento do filtro.
- Conectar à energia: Plug the power cord into the power port on the air purifier, then plug the other end into a suitable electrical outlet.
- Inicialização: The device will typically power on automatically or require a press of the power button on the OLED display.

Imagem 4.1: Traseira view of the air purifier, indicating the filter compartment.
5. Instruções de operação
The Xiaomi Smart Air Purifier 4 can be operated via its touch-sensitive OLED display or through the Mi Home app.
5.1. OLED Display and Control Panel
The circular OLED display on the front of the unit serves as both an information display and a control panel.
- Ligar/desligar: Press and hold the button on the OLED display to turn the purifier on or off.
- Troca de modo: Briefly press the button to cycle through different operating modes: Automatic, Sleep, Low, Medium, High, and Preferred.
- Informações do visor: The screen shows real-time PM2.5/PM10 levels, temperature, humidity, Wi-Fi status, and current operating mode.

Image 5.1: Close-up of the OLED display showing air quality readings.
5.2. Smart Control with Mi Home App
For advanced control and smart features, download the Mi Home app on your smartphone.
- Baixar aplicativo: Procurar "Mi Home" in your app store (Google Play Store or Apple App Store).
- Adicionar dispositivo: Open the app, log in or create an account, and follow the on-screen instructions to add your Xiaomi Smart Air Purifier 4. Ensure your phone is connected to a 2.4 GHz Wi-Fi network during setup.
- Recursos do aplicativo: Por meio do aplicativo, você pode:
- Remotely control power and operating modes.
- Monitor real-time air quality, temperature, and humidity.
- Defina horários e cronômetros.
- Adjust fan speed in Preferred mode.
- Check filter lifespan and order replacements.
- Integrate with other Xiaomi smart home devices.

Image 5.2: The air purifier controlled via the Mi Home app on a smartphone.
5.3. Voice Control (Google Assistant & Amazon Alexa)
Once connected to the Mi Home app, you can link your air purifier to Google Assistant or Amazon Alexa for voice commands.
- Vinculação de contas: Follow the instructions in the Google Home app or Amazon Alexa app to link your Mi Home account.
- Comandos de voz: Utilize comandos como:
- "Hey Google, turn on the air purifier."
- "Alexa, set the air purifier to auto mode."
- "Hey Google, what is the air quality?"
6. Manutenção
A manutenção regular garante o desempenho ideal e prolonga a vida útil do seu purificador de ar.
6.1. Substituição do filtro
The filter has a lifespan of up to 12 months, depending on usage and air quality. The Mi Home app will notify you when a replacement is needed.
- Desligue e desconecte: Desligue e desconecte sempre o purificador de ar da tomada antes de substituir o filtro.
- Abra o compartimento do filtro: Abra a tampa do compartimento do filtro.
- Remover filtro antigo: Retire cuidadosamente o filtro usado. Descarte-o de acordo com as normas locais.
- Instalar novo filtro: Remove the new filter from its packaging and insert it into the compartment.
- Fechar Compartimento: Feche bem a tampa do compartimento do filtro.
- Redefinir vida útil do filtro: After replacement, plug in and power on the purifier. Reset the filter life counter via the Mi Home app or by following instructions on the OLED display (if available).

Image 6.1: The high-efficiency filter for the Xiaomi Smart Air Purifier 4.
6.2. Limpeza do purificador de ar
Regularly clean the exterior and air outlets to prevent dust buildup.
- Exterior: Limpe as superfícies exteriores com um pano macio, damp pano. Não use produtos de limpeza abrasivos ou solventes.
- Top Air Outlet Grille: The top grille is detachable. Gently remove it and clean any accumulated dust with a soft brush or vacuum cleaner. Ensure it is dry before reattaching.
- Limpeza do sensor: Periodically clean the PM2.5/PM10 sensor located on the side or rear of the unit. Use a dry cotton swab to gently wipe the sensor lens.
7. Solução De Problemas
Se você tiver problemas com seu purificador de ar, consulte os problemas comuns e suas soluções a seguir:
| Problema | Possível causa | Solução |
|---|---|---|
| O dispositivo não liga. | Cabo de alimentação mal conectado. Sem energia na tomada. | Check if the power cord is securely plugged into both the purifier and the wall outlet. Test the outlet with another device. |
| Desempenho ruim na purificação do ar. | Filter is dirty or expired. Air inlets/outlets are blocked. Room size exceeds capacity. | Replace the filter. Ensure no obstructions around the air inlets/outlets. Confirm the purifier is suitable for your room size (up to 40 m²). |
| Ruído incomum durante a operação. | Foreign object inside. Filter not installed correctly. Device not on a stable surface. | Turn off and unplug the device. Check for any foreign objects. Reinstall the filter. Place the purifier on a flat, stable surface. |
| Cannot connect to Mi Home app. | Incorrect Wi-Fi password. Router is 5GHz only. Device too far from router. | Ensure correct Wi-Fi password. Connect your phone to a 2.4 GHz Wi-Fi network. Move the purifier closer to the router. Reset Wi-Fi on the purifier (refer to app instructions). |
| O visor OLED não está funcionando. | Device is off. Display brightness is too low. | Ensure the device is powered on. Adjust display settings via the Mi Home app. |
Se o problema persistir após tentar essas soluções, entre em contato com o suporte ao cliente.
8. Especificações
| Marca | Xiaomi |
| Número do modelo | AC-M15-SC |
| Dimensões do produto (C x L x A) | 25 x 25 x 55.5 cm |
| Peso do item | 12 gramas |
| Cor | Branco |
| PCADR | 500 m³/h |
| FCADR | 185 m³/h |
| Área de cobertura | Até 40 m² |
| Nível de ruído | 33.7 decibéis (em modo de repouso) |
| Tipo de filtro | Filtro HEPA |
| Método de controle | Touch, Mobile App, Voice Control |
| Características especiais | Negative Ions, Smart Control (Google Assistant, Amazon Alexa) |
9. Garantia e Suporte
Your Xiaomi Smart Air Purifier 4 comes with a Garantia de 2 ano a partir da data da compra. Esta garantia cobre defeitos de fabricação sob uso normal.
For warranty claims, technical support, or general inquiries, please refer to the official Xiaomi support channels or contact your retailer.
- Suporte online: Visite o site oficial da Xiaomi website para perguntas frequentes, guias de solução de problemas e informações de contato.
- Atendimento ao Cliente: Refer to the contact details provided with your purchase or on the Xiaomi official website da sua região.

Image 9.1: Service commitments including 2-year warranty and local support.





