1. Introduction
Thank you for choosing the DIFFMELY X200-Black Fragrance Aroma Scent Diffuser. This advanced diffuser is designed to provide a consistent and wide-ranging scent experience for large areas, up to 5300 sq ft. Featuring patented atomization technology and convenient Bluetooth control, it is ideal for both business and home environments. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and longevity of your device.

The DIFFMELY X200-Black Diffuser, highlighting its extensive coverage area and Bluetooth connectivity.
2. Key Features
- Large Coverage Area: Effectively scents areas up to 5300 sq ft, suitable for large homes, offices, and commercial spaces.
- Fully Automatic Operation: Program 24/7 operation and standby times to suit your specific needs.
- Patented Atomization Technology: Utilizes a two-fluid system for fine mist spray, ensuring stronger aroma concentration and longer duration. No need to dilute essential oils with water.
- Compact Design: Bare metal size of 6.8"L x 5.5"W x 2.8"H allows for discreet placement.
- Bluetooth Control: Manage settings and schedules conveniently via a dedicated mobile application (Scent Master) on Android and iOS devices.
- Versatile Installation: Can be installed on a wall or placed vertically on a flat surface.
- Large Capacity: Equipped with a 7 Fl Oz (200ml) essential oil bottle.

Illustration of the patented two-fluid atomization technology, which ensures efficient and long-lasting scent diffusion.
3. Setup
3.1 Unpacking and Placement
Carefully remove the diffuser from its packaging. Choose a suitable location for the diffuser, considering its coverage area and power source requirements. The device can be mounted on a wall or placed on a flat surface.
3.2 Wall Mounting (Optional)
- Securely attach the hanging plate to the desired wall location using appropriate fasteners (not included).
- Place the diffuser onto the hanging plate, ensuring it is firmly seated.
3.3 Installing Essential Oil Bottle
- Gently press the top raised cover button to open the face cover of the diffuser.
- Unscrew the cap from your essential oil bottle and carefully screw it into the atomizer head.
- Insert the assembled bottle and atomizer head into the designated slot inside the diffuser.
- Close the face cover until it clicks securely.

Step-by-step guide for placing the diffuser and accessing the internal compartment for oil installation.
3.4 Power Connection
Connect the power adapter to the diffuser's power supply socket and then plug it into a standard electrical outlet. The device requires 10 watts of power.
4. Operation
4.1 Bluetooth Control System
The DIFFMELY X200-Black diffuser is controlled via the "Scent Master" mobile application, available for both Android and iOS devices.
- Download the App: Search for "Scent Master" in your device's app store or scan the QR code provided in the quick start guide (or from the image below) to download and install the application. You can also download it from this link.
- Pairing: Open the Scent Master app. The app will search for nearby devices. Select your diffuser from the list. The initial password for pairing is 9999. If you forget a modified password, press the restore button on the device for 5 seconds until you hear "did" twice to reset to 9999.
- Working Settings: Within the app, you can:
- Modify device name and remarks.
- Change the password.
- Control the fan switch (low/high settings).
- Add and edit working modes.
- Set specific period times (start/end) and frequency settings (work time/pause time) for scent diffusion.
- Select specific days of the week for operation.

The Scent Master application provides comprehensive control over your diffuser's settings and schedule.

The diffuser can be easily controlled via Bluetooth using the Scent Master app on your smartphone.
4.2 Mist Output
The diffuser produces a fine mist of fragrance. The intensity and spread of the scent can be adjusted through the app's settings, including fan speed and diffusion intervals.

The diffuser's advanced technology ensures a consistent and fine mist output for optimal scent distribution.
5. Maintenance
Regular maintenance ensures the longevity and efficient operation of your DIFFMELY X200-Black diffuser.
5.1 Essential Oil Handling
- Do not dilute essential oils with water. The diffuser is designed for pure essential oils.
- Store essential oils away from direct light and heat to preserve their quality.
- Keep essential oils out of reach of children and pets. Avoid skin contact.
5.2 Cleaning the Diffuser
To prevent clogging and maintain optimal performance, it is recommended to clean the atomizer head periodically, especially when changing essential oil types or if you notice reduced mist output.
- Turn off and unplug the diffuser.
- Open the face cover and carefully remove the essential oil bottle with the atomizer head.
- Unscrew the atomizer head from the bottle.
- Clean the atomizer head by soaking it in rubbing alcohol for 15-30 minutes. This helps dissolve any oil residue.
- Allow the atomizer head to air dry completely before reassembling.
- Wipe the exterior of the diffuser with a soft, dry cloth. Do not use abrasive cleaners or immerse the unit in water.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist output or weak mist | Atomizer head clogged; Essential oil bottle empty; Power issue | Clean the atomizer head (see Maintenance); Refill essential oil; Check power connection |
| Device not turning on | No power; Faulty power adapter | Ensure power adapter is securely plugged in; Try a different outlet; Contact support if adapter is suspected faulty |
| Cannot connect via Bluetooth | Bluetooth off on phone; App issue; Incorrect password; Device not in pairing mode | Ensure Bluetooth is enabled on your phone; Restart the Scent Master app; Reset device password to 9999 (press restore button for 5s); Ensure device is powered on |
| Unusual noise from device | Loose component; Internal issue | Ensure all components are securely in place; If noise persists, contact customer support |
7. Specifications
| Specification | Detail |
|---|---|
| Brand | DIFFMELY |
| Model Name | X200 |
| Item Model Number | DX200 |
| Color | Black |
| Product Dimensions | 5.5"L x 2.8"W x 6.8"H (140mm L x 70mm W x 170mm H) |
| Item Weight | 1.76 pounds |
| Coverage Area | Up to 5300 sq ft |
| Capacity | 200 Milliliters (7 Fl Oz) |
| Power Source | Corded Electric |
| Wattage | 10 Watts |
| Special Features | Bluetooth Control, Compact Design, Support Wall Mounting, Turbocharging Systems |
| Auto Shutoff | Yes |

Detailed dimensions of the X200-Black diffuser for accurate placement and planning.
8. Warranty and Support
DIFFMELY is committed to providing high-quality products and customer satisfaction. If you experience any dissatisfaction or require assistance with your DIFFMELY X200-Black diffuser, please do not hesitate to contact us directly. Our customer support team is available to help with troubleshooting, warranty claims, and any other product-related inquiries.
For support, please refer to the contact information provided with your purchase or visit the official DIFFMELY website.




