1. Product Overview
The YIKHOM Automatic Liquid Soap Dispenser (Model YK402) offers a hands-free and hygienic solution for dispensing liquid and gel soaps. It features advanced infrared motion sensing technology for effortless operation and eight adjustable dispensing levels to suit various needs.
With a generous 450mL (15.37 oz) capacity, this dispenser is compatible with a wide range of liquids, including hand soap, dish soap, shampoo, and facial cleanser. Its sleek design makes it a versatile addition to kitchens, bathrooms, and other spaces.
Equipped with a 2000mAh lithium battery, the dispenser is USB-C rechargeable and provides up to 60 days of use on a full charge. It also features a screen touch interface, status prompt light, IPX6 density waterproof rating, and an advanced anti-slip base for stability.

Figure 1: YIKHOM Automatic Liquid Soap Dispenser (White Model)
2. Safety Information
- Do not submerge the dispenser in water, despite its IPX6 waterproof rating. The rating protects against strong water jets, not submersion.
- Keep the device away from extreme temperatures and direct sunlight.
- Use only the provided USB-C charging cable or a compatible certified cable.
- Ensure the dispenser is placed on a stable, flat surface to prevent tipping.
- Keep out of reach of small children to prevent accidental ingestion of soap or damage to the device.
3. Setup Guide
3.1 Initial Charging
Before first use, fully charge the dispenser. Connect the provided USB-C cable to the charging port located on the top back of the unit. A full charge takes approximately 2.5 hours and provides up to 60 days of use.

Figure 2: USB-C Charging Port
3.2 Filling the Dispenser
- Gently twist the top section of the dispenser counter-clockwise to unlock and separate it from the liquid reservoir.
- Pour your desired liquid soap or gel into the transparent reservoir. Ensure not to overfill.
- Align the top section with the reservoir, matching the arrow indicators, and twist clockwise to securely lock it in place.

Figure 3: Easy Steps to Fill and Assemble

Figure 4: Compatibility with Various Liquids & Gels
4. Operating Instructions
4.1 Power On/Off
To power on the dispenser, long-press the power button on the touch screen interface located on the top of the unit. The display will illuminate. To power off, long-press the power button again.
4.2 Dispensing Soap
Place your hand under the nozzle. The infrared motion sensor will detect your hand and automatically dispense soap. The dispenser features eight adjustable dispensing levels.
4.3 Adjusting Dispensing Volume
Use the '+' and '-' buttons on the touch screen to adjust the dispensing volume. The display will show the current level (1-8). Level 1 dispenses the smallest amount, while Level 8 dispenses the largest. Adjust according to the thickness of the liquid and your preference.

Figure 5: Touch Screen Controls for Power and Volume Adjustment
Video 1: Demonstration of YIKHOM Automatic Soap Dispenser YK400 Series features, including setup, operation, and dispensing levels.
5. Maintenance
5.1 Automatic Cleaning Function
The YK402 series features an automatic cleaning function to prevent clogging. To activate, ensure the dispenser is in the off state. Then, click the power button three times in quick succession. The dispenser will run a cleaning cycle to clear any blockages.
5.2 Regular Cleaning
Wipe the exterior of the dispenser with a soft, damp cloth. Do not use abrasive cleaners or submerge the unit. For the liquid reservoir, it can be detached and rinsed with water as needed.
5.3 Refilling
When the liquid level is low, refill the dispenser following the steps in Section 3.2. Regular refilling ensures consistent performance.
6. Troubleshooting
- Dispenser not turning on: Ensure the unit is fully charged. Connect to a USB-C power source and allow it to charge.
- No soap dispensed:
- Check if the liquid reservoir is empty and refill if necessary.
- Ensure your hand is placed correctly under the sensor.
- Activate the automatic cleaning function (Section 5.1) to clear potential clogs.
- Inconsistent dispensing volume: Adjust the dispensing level using the '+' and '-' buttons on the touch screen (Section 4.3).
- Soap leaking: Ensure the top section is securely locked onto the reservoir. Check for any cracks or damage to the unit.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | YK402 |
| Color | White |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Product Dimensions | 4.44"L x 3.26"W x 8.18"H |
| Capacity | 450mL / 15.37 oz |
| Battery | 1 Lithium Ion (2000mAh, included) |
| Charging Port | USB-C |
| Waterproof Rating | IPX6 |
| Dispensing Levels | 8 Adjustable Levels |
| Item Weight | 14.4 ounces |
| Manufacturer | YIKHOM |
| Country of Origin | China |
8. Warranty and Support
YIKHOM provides a one-year quality guarantee for this automatic soap dispenser. We are committed to offering lifetime professional service to our customers.
If you require any assistance, have questions, or encounter issues with your product, please do not hesitate to contact us through Amazon's customer service platform. Our support team is ready to help.