1. Introduction
The KQLKJ 350ml Portable Mini Humidifier (Model KQ-38) is a compact, USB-powered device designed to add moisture to the air in small spaces such as bedrooms, cars, offices, and during travel. It features two mist modes and an automatic shut-off function for safety and convenience.
Key Features:
- Ultra-Portable Design: Compact size (350ml capacity) suitable for desks, cars, and travel.
- Two Mist Modes: Offers continuous spray and intermittent spray (5 seconds on, 5 seconds off) to suit different needs.
- Automatic Shut-Off: Prevents dry burning and ensures safety by automatically turning off when water levels are low or after a set duration.
- Quiet Operation: Operates at a low noise level (below 25dB) for undisturbed sleep or work.
- Cool Mist Technology: Provides a safe mist without heat, suitable for children and plants.
- USB Powered: Conveniently powered via USB, making it easy to use with laptops, power banks, or car chargers.
- One-Click Control: Simple single-button operation for ease of use.
2. Package Contents
Please check the box for the following items:
- 1 x KQLKJ Mini Humidifier
- 1 x USB Cable (Type-C)
- 1 x User Manual
- 2 x Cotton Swabs (replacement)
3. Setup Instructions
Follow these steps to set up your humidifier for first-time use:
- Open the Humidifier: Gently twist the top cover counter-clockwise to open and separate it from the water tank.
- Prepare the Cotton Swab: Remove the cotton swab from its housing. Soak the cotton swab completely in water for a few minutes until it is thoroughly saturated. This is crucial for proper mist production.
- Reinsert Cotton Swab: Place the wet cotton swab back into its housing, ensuring the spring is at the bottom and the swab is fully inserted.
- Fill Water Tank: Fill the transparent water tank with pure water. Do not exceed the "Max" water line indicated on the tank. Using pure water is recommended to prevent mineral buildup.
- Close the Humidifier: Place the top cover back onto the water tank and twist clockwise to secure it tightly. Ensure it is sealed to prevent leaks.
- Connect Power: Plug the provided USB cable into the humidifier's USB-C port and connect the other end to a USB power source (e.g., laptop, power bank, car charger, or wall adapter).
Figure 3.1: Opening the top cover.
Figure 3.2: Adding water to the tank.
Figure 3.3: Closing the top cover.
Video 3.1: Detailed setup and initial operation of the KQLKJ Mini Humidifier, including unboxing, preparing the cotton swab, filling the water tank, and assembling the device.
4. Operating Instructions
The humidifier features a simple one-button control for different mist modes:
- Continuous Mist Mode: Press the power button once. The humidifier will emit a continuous mist and automatically stop after approximately 3 hours. This mode is suitable for quick humidification.
- Intermittent Mist Mode: Press the power button a second time. The humidifier will spray mist for 5 seconds and then pause for 5 seconds. This mode will automatically stop after approximately 7 hours. This mode is ideal for prolonged use, such as overnight.
- Power Off: To turn off the humidifier, long-press the power button for 2 seconds.
Figure 4.1: One-button control for mist modes.
Figure 4.2: Humidifier in use in a bedroom, demonstrating quiet operation.
Video 4.1: Demonstration of the continuous and intermittent mist modes of the KQLKJ Mini Humidifier.
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your humidifier.
Cleaning the Water Tank:
- Empty any remaining water from the tank after each use.
- Wipe the inside of the water tank with a soft, damp cloth.
- For deeper cleaning, use a mild detergent and rinse thoroughly. Ensure no detergent residue remains.
- Allow the tank to air dry completely before refilling or storing.
Cotton Swab Replacement:
- The cotton swab should be replaced every 1 to 3 months, or when you notice a decrease in mist output.
- To replace, open the humidifier, remove the old cotton swab and its housing, and insert a new, pre-soaked swab.
- Ensure the spring is correctly positioned at the bottom of the swab housing.
Figure 5.1: Cleaning the humidifier components.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No mist or low mist output | Insufficient water in tank Dry cotton swab Clogged atomizer plate Loose USB connection | Refill water tank Soak cotton swab thoroughly Clean atomizer plate with a soft cloth Ensure USB cable is securely plugged in |
| Water leakage | Top cover not tightened Overfilled water tank | Ensure top cover is twisted clockwise until secure Do not fill water above the "Max" line |
| Humidifier turns off unexpectedly | Automatic shut-off feature activated Low water level | This is a safety feature. Continuous mode turns off after 3 hours, intermittent after 7 hours. Refill water tank if empty. |
| Unpleasant odor from mist | Stagnant water Dirty water tank/cotton swab | Change water daily Clean water tank and replace cotton swab if necessary |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | KQLKJ |
| Model Name | KQ-38 |
| Capacity | 350 Milliliters |
| Power Source | DC (USB) |
| Operation Mode | Ultrasonic |
| Control Method | Push Button |
| Noise Level | <25dB |
| Dimensions (D x W x H) | 3.8" x 3.8" x 6.5" |
| Material | Plastic |
| Special Feature | Auto Shut Off |
8. Safety Information
- Always use pure water to prevent mineral buildup and ensure optimal performance.
- Do not add water above the maximum fill line to avoid leakage.
- Keep the humidifier out of reach of children and pets.
- Do not immerse the entire device in water or other liquids.
- Unplug the humidifier from the power source when not in use, when refilling, or when cleaning.
- Do not use essential oils or corrosive liquids in the water tank, as this may damage the device.
- Ensure the humidifier is placed on a stable, flat surface to prevent it from tipping over.
9. Warranty and Support
For any product inquiries, technical support, or warranty information, please contact KQLKJ customer service. You can reach us via email at KQLKJTEAM@outlook.com. Our team is available online 24 hours a day, 7 days a week to assist you.