Introduction
Thank you for choosing the BYONDSELF 500ml Ultrasonic Essential Oil Diffuser and Humidifier. This device is designed to ionize essential oils into a fine mist, spreading fragrance and purifying airborne odors, while also humidifying the air. Its quiet operation and various features make it suitable for creating a comfortable environment in your home or office.
Safety Information
- Always place the diffuser on a flat, stable surface.
- Do not overfill the water tank beyond the maximum fill line. Overfilling may cause leakage or affect mist output.
- Use only clean tap water or distilled water.
- Only use 100% pure, natural essential oils. Avoid corrosive chemicals or synthetic fragrances.
- Keep the diffuser out of reach of children and pets.
- Unplug the device from the power outlet before cleaning or when not in use.
- Do not touch the ultrasonic plate with bare hands when the device is operating.
- Do not block the mist outlet.
- If the diffuser emits an unusual smell or sound, unplug it immediately.
Package Contents
- BYONDSELF 500ml Essential Oil Diffuser Unit
- Power Adapter
- Remote Control
- User Manual (this document)
Product Overview
Familiarize yourself with the components of your BYONDSELF diffuser.


Main Components:
- Mist Outlet: Where the aromatic mist is released.
- Top Cover: Protects the water tank and internal components.
- Water Tank: Holds up to 500ml of water and essential oils.
- Max Water Level Line: Indicates the maximum amount of water to add.
- Control Buttons: Located on the front for Light and Mist functions.
- Power Inlet: For connecting the power adapter.
- Remote Control: For convenient operation from a distance.
Setup
Follow these steps for initial setup:
- Place the Diffuser: Position the diffuser on a flat, stable, and water-resistant surface.
- Connect Power: Plug the power adapter into the diffuser's power inlet, then into a wall outlet.
- Remove Cover: Gently lift the top cover to access the water tank.
- Add Water: Fill the water tank with clean tap water or distilled water up to the 'MAX' fill line. Do not exceed this line.
- Add Essential Oil: Add 3-5 drops of your preferred 100% pure essential oil directly into the water tank. Adjust the amount based on your preference.
- Replace Cover: Place the top cover back onto the diffuser, ensuring it is securely seated.

Operating Instructions
Operate your diffuser using the control buttons on the unit or the included remote control.
Mist Control:
- Press the MIST button (on unit or remote) once for continuous mist.
- Press again to cycle through timer settings: 1 hour, 3 hours, 6 hours, or OFF.
- The diffuser will automatically shut off when the water level is low, regardless of the timer setting.
Light Control:
- Press the LIGHT button (on unit or remote) once to turn on the LED lights, which will cycle through 7 colors.
- Press again to fix the light to a specific color.
- Continue pressing to cycle through colors or turn the light off.
Remote Control Functions:
The remote control allows for convenient operation up to 8 meters (26 feet) away.

- ON/OFF: Powers the unit on or off.
- INTERMITTENT: Sets mist to intermittent mode (e.g., 30 seconds on, 30 seconds off).
- CONTINUOUS: Sets mist to continuous mode.
- TIMING: Cycles through 1H, 3H, 6H, and ON (continuous) timer settings.
- BIG/SMALL: Adjusts mist output volume.
- LIGHT: Controls the LED light functions (on, color cycle, fixed color, off).
Maintenance
Regular cleaning helps maintain optimal performance and extends the lifespan of your diffuser.
Cleaning Instructions:
- Unplug: Always unplug the diffuser from the power outlet before cleaning.
- Empty Water: Remove the top cover and carefully empty any remaining water from the tank.
- Wipe Tank: Use a soft cloth or sponge to wipe the inside of the water tank. For stubborn residue, use a small amount of mild dish soap and rinse thoroughly.
- Clean Ultrasonic Plate: Gently wipe the ultrasonic plate (the small ceramic disc at the bottom of the tank) with a cotton swab dipped in white vinegar. Do not scrub or use abrasive materials.
- Dry: Allow all parts to air dry completely before reassembling or storing.
Note: Do not immerse the base unit in water. Clean the exterior with a soft, damp cloth.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output | Insufficient water; water level too high; ultrasonic plate dirty; mist outlet blocked. | Add water to the correct level; clean the ultrasonic plate; ensure mist outlet is clear. |
| Diffuser not turning on | No power; adapter not connected properly. | Check power connection; ensure adapter is securely plugged in. |
| Water leakage | Overfilled water tank; cover not properly seated. | Do not exceed the MAX fill line; ensure the top cover is securely in place. |
| Remote control not working | Battery depleted; remote out of range; obstruction. | Replace remote battery; ensure remote is within 8m range and pointed at the diffuser; remove any obstructions. |
Specifications
- Brand: BYONDSELF
- Model Number: 901
- Capacity: 500 ml
- Material: ABS + PP (Acrylonitrile Butadiene Styrene + Polypropylene)
- Product Dimensions: 17 x 17 x 16 cm
- Item Weight: 590 grams
- Power Source: Corded Electric
- Operating Time: Up to 12 hours (continuous mode)
- Special Features: Ultrasonic humidification, 7-color LED light, 4 timer settings (1H/3H/6H/ON), Auto Shut-off (when waterless), BPA-free, Remote Control.
- Control Method: Remote
Warranty and Support
For any questions or concerns regarding your BYONDSELF diffuser, please contact the seller directly through your Amazon purchase history. Please refer to your purchase documentation for specific warranty details.