1. Introduction
Thank you for purchasing the Yakiter 500ml Essential Oil Diffuser. This device combines aromatherapy, humidification, a smart Bluetooth speaker, and a night light to enhance your environment. Please read this manual carefully before use to ensure proper operation and maintenance.
2. Product Overview
The Yakiter 500ml Essential Oil Diffuser is designed to provide a multi-sensory experience. It features ultrasonic technology for quiet operation, a large water tank for extended use, and customizable LED lighting.

Figure 1: Yakiter 500ml Essential Oil Diffuser with its remote control and examples of its 7 LED light colors.
3. Features
- 4-In-1 Multifunction: Functions as an aromatherapy diffuser, humidifier, smart Bluetooth speaker, and night light.
- Quiet & Safe Operation: Utilizes ultrasonic technology for silent misting and includes an automatic shut-off feature when water levels are low. Made from BPA-free materials.
- Remote Control: Allows for convenient adjustment of power, mist intensity (low to high), light settings, and timer functions from a distance.
- 7 LED Light Options: Offers 7 adjustable color night light options, suitable for various moods and activities. Lights can be turned off.
- 500ml Capacity with Timer Settings: Large water tank provides 8 to 13 hours of continuous operation. Includes 4 timer modes: 1 hour, 2 hours, 3 hours, and continuous (ON).
4. Package Contents
Please check the package for the following items:
- Yakiter 500ml Essential Oil Diffuser Unit
- Remote Control
- Power Adapter
- User Manual
5. Setup
- Placement: Place the diffuser on a flat, stable surface away from direct sunlight or heat sources.
- Connect Power: Plug the power supply into the DC jack located at the bottom of the diffuser unit. Then, plug the adapter into a standard wall outlet.

Figure 2: Plug the power supply into the bottom of the essential oil diffuser.
- Fill Water Tank: Remove the top cover. Fill the water tank with clean tap water up to the MAX water level line. Do not overfill.

Figure 3: Add water and a few drops of essential oil to the diffuser.
- Add Essential Oil: Add 3-5 drops of your preferred essential oil directly into the water tank. Adjust the amount based on desired fragrance intensity.
- Replace Cover: Securely place the top cover back onto the diffuser unit.
6. Operating Instructions
6.1. Using the Buttons on the Unit

Figure 4: Control buttons on the diffuser unit.
- LIGHT Button: Press to cycle through 7 LED light colors. Press again to fix a color, or press and hold to turn off the light.
- HIGH/LOW Button: Press to adjust mist intensity between high (strong) and low (weak).
- MIST Button: Press to turn on the mist and cycle through timer settings: 1 hour, 2 hours, 3 hours, and continuous (ON). Press and hold to turn off the mist.
6.2. Using the Remote Control

Figure 5: Remote control for the diffuser.
- ON/OFF: Turns the diffuser on or off.
- Mist Intensity (High/Low): Adjusts the mist output.
- Timer (60/120/180/ON): Sets the operating duration.
- Light: Controls the LED light colors and brightness.
6.3. Bluetooth Speaker Function
The diffuser includes a built-in Bluetooth speaker. To connect:
- Ensure the diffuser is powered on.
- On your mobile device, enable Bluetooth and search for available devices.
- Select "Yakiter Diffuser" (or similar name) from the list to pair.
- Once connected, you can play audio through the diffuser's speaker.

Figure 6: The diffuser's Bluetooth music player function.
7. Maintenance
Regular cleaning is essential for optimal performance and longevity of your diffuser.
7.1. Daily Maintenance
- Empty any remaining water from the tank.
- Wipe the inside of the water tank with a clean, soft cloth.
7.2. Weekly Cleaning
- Unplug the diffuser from the power outlet.
- Remove the top cover.
- Drain any remaining water from the "DRAIN SIDE" of the tank.
- Add a small amount of warm water (not hot) and a few drops of neutral detergent to the tank.
- Gently wipe the inside of the tank and the ultrasonic vibration plate with a soft brush or cotton swab.
- Rinse the tank thoroughly with clean water, ensuring no detergent residue remains.
- Wipe the exterior of the diffuser with a soft, dry cloth.
- Allow all parts to air dry completely before reassembling or storing.
Important:
- Do not immerse the diffuser unit in water.
- Do not use corrosive detergents or harsh chemicals.
- Ensure the mist outlet is clear of obstructions.
8. 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 appropriate level; Ensure water is below MAX line; Clean ultrasonic plate; Clear mist outlet. |
| Diffuser not turning on | No power; Unit not properly assembled; Water level too low (auto shut-off). | Check power connection; Reassemble unit correctly; Add water. |
| Loud "Bluetooth connected/disconnected" voice prompt | Default system voice prompt. | This is a known characteristic of the device and cannot be adjusted or turned off. Consider placing the unit in an area where this sound is less disruptive. |
| Light or diffuser function turns off after short period (e.g., 20 mins) | Timer setting activated; Low water level. | Check timer setting and adjust to 'ON' for continuous operation; Refill water tank. |
9. Specifications
- Brand: Yakiter
- Model: B0CWTMDB21
- Capacity: 500 ml
- Material: BPA-free Plastic
- Runtime: 8-13 hours (depending on mist mode)
- Coverage Area: 41-60 m² (approx.)
- Light: 7 LED color options
- Auto Shut-off: Yes, when water runs low
- Dimensions: Approximately 16.8 cm (W) x 12.5 cm (H)
- Weight: 530 g
10. Warranty and Support
For warranty information and customer support, please refer to the seller's policy on the purchase platform or contact Yakiter customer service directly.
Seller: HMMY-AU
Return Policy: 30 days (refund/replacement)
For further assistance, please visit the Yakiter Store on Amazon.