1. Introduction
Thank you for purchasing the BRUNO Slit Light Aroma Mist. This ultrasonic aroma diffuser is designed to enhance your living space with pleasant aromas and a soothing light. Please read this manual thoroughly before use to ensure safe and optimal operation. Keep this manual for future reference.
2. Safety Information
- Do not use near heat sources, open flames, or in direct sunlight.
- Ensure the device is placed on a stable, flat surface to prevent tipping.
- Do not immerse the main unit in water or other liquids.
- Use only clean tap water. Do not use distilled water, purified water, or chemical solutions.
- Only use 100% pure essential oils. Avoid synthetic fragrances or oils that may damage the unit.
- Keep out of reach of children and pets.
- Unplug the device before cleaning or refilling.
- Do not block the mist outlet.
- If the device emits unusual sounds, smells, or smoke, unplug it immediately and contact customer support.
3. Package Contents
Please check that all items are present and in good condition:
- BRUNO Slit Light Aroma Mist Main Unit (Model BOE113-BE)
- USB Cable (approx. 1.5m)
- User Manual (this document)
Note: A mobile battery and AC-USB adapter are not included. Please prepare a USB power source with a 5V1A output.
4. Product Overview
Familiarize yourself with the components of your BRUNO Slit Light Aroma Mist.

Image: Front view of the BRUNO Slit Light Aroma Mist in beige, showing the slit design and control buttons.

Image: Close-up of the control panel at the base of the diffuser, showing the power, mist, and light buttons.

Image: Bottom view of the diffuser, highlighting the USB power input port and product label.
5. Setup
- Unpack: Carefully remove all components from the packaging.
- Placement: Place the aroma mist on a flat, stable, and water-resistant surface. Ensure it is not near any electronic devices or furniture that could be damaged by mist.
- Connect Power: Insert the small end of the provided USB cable into the USB port at the bottom of the diffuser. Connect the other end to a 5V1A USB power source (not included).
6. Operating Instructions
- Fill Water Tank: Remove the top cover of the diffuser. Fill the water tank with clean tap water up to the MAX line. Do not overfill.
- Add Aroma Oil: Add 2-3 drops of 100% pure essential oil directly into the water tank. Adjust the amount based on your preference and the size of the room.

Image: A hand adding drops of essential oil into the water tank of the diffuser.
- Replace Cover: Securely place the top cover back onto the main unit.
- Power On/Mist Function: Press the Power button (⏻) once to turn on the device. The mist function will start in continuous mode. Press again to switch to intermittent mode. Press a third time to turn off the mist.
- LED Light Function: Press the Light button (💡) once to turn on the LED light in bright mode. Press again to switch to dim mode. Press a third time to turn off the light.

Image: The BRUNO Slit Light Aroma Mist illuminated in a dark room, showcasing the light filtering through its slits.
- Automatic Shut-off: The device will automatically shut off when the water level is too low.
7. Maintenance
Regular cleaning helps maintain the performance and longevity of your aroma mist.
- Daily Cleaning: After each use, unplug the device. Empty any remaining water from the tank. Wipe the inside of the water tank and the ultrasonic plate with a soft, damp cloth.
- Weekly Cleaning: For a more thorough cleaning, use a cotton swab dipped in white vinegar to gently clean the ultrasonic plate. Rinse the tank with clean water, being careful not to get water into the air outlet.
- Drying: Allow all parts to air dry completely before reassembling or storing.
- Storage: If not in use for an extended period, clean and dry the unit thoroughly, then store it in a cool, dry place.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or weak mist | Low water level Ultrasonic plate dirty Mist outlet blocked | Refill water tank Clean ultrasonic plate Clear mist outlet |
| Device does not turn on | No power connection Faulty USB cable/adapter | Check USB connection Try a different USB cable or 5V1A adapter |
| Unusual noise | Insufficient water Device not on a flat surface | Add water Place on a stable, flat surface |
| Water leakage | Overfilled water tank Cover not properly secured | Do not exceed MAX line Ensure cover is tightly closed |
9. Specifications
| Feature | Description |
|---|---|
| Model Number | BOE113 |
| Color | Beige |
| Dimensions (Product) | W91mm × H183mm (Diameter 91mm, Height 183mm) |
| Weight | 300g |
| Materials | Polypropylene, ABS resin |
| Country of Origin | China |
| Rated Power Consumption | 5W |
| Humidification Method | Ultrasonic |
| Operation Modes | Continuous / Intermittent |
| Safety Features | Automatic shut-off when water runs out |
| Light Function | LED light (Bright / Dim) |
| Aroma Compatibility | Aroma oil compatible |
| Power Source | DC5V (USB) |
| Cord Length | Approx. 1.5m |
| Accessories | USB Cable |
10. Warranty and Support
BRUNO products are manufactured to the highest quality standards. For warranty information, please refer to the warranty card included with your product or visit the official BRUNO website. If you encounter any issues or have questions not covered in this manual, please contact BRUNO customer support.
BRUNO Official Website: bruno-inc.com