Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your wanjiaone LED Desk Lamp, Model T188. This versatile desk lamp combines illumination with a digital clock display, color-changing nightlight, pen holder, and a convenient USB charging port.
Product Overview
Key Features
- Multifunctional Design: Integrates an LED desk lamp, color-changing nightlight, pen holder, USB charger, and a clock display with date, time, alarm, and temperature.
- Dimmable & Eye-Caring LED: Features 3 brightness levels and advanced LED light source technology for soft, high color rendering illumination, suitable for reading, working, or studying.
- Colorful Nightlight: Equipped with a nightlight on both sides of the lamp holder, offering various color modes to suit your preference.
- Digital Clock Display: Provides clear display of time, date, and temperature, with an alarm function.
- Integrated USB Charging Port: A 5V/1A USB output port allows convenient charging of mobile devices.
- Convenient Pen Holder: Offers storage space for pens and other small stationery items, helping to keep your desk organized.
Package Contents
- LED Desk Lamp (Model T188)
- Power Cable
- Power Head
- User Manual

Image: The wanjiaone LED Desk Lamp, showcasing its main features including the flexible lamp arm, pen holder, digital display, and side nightlight.
Setup
- Unpack the Lamp: Carefully remove all components from the packaging.
- Connect Power: Insert the power cable into the DC 5V/2A input port on the back of the lamp base. Connect the power head to a suitable power outlet.
- Activate Clock Display: The clock display requires a pre-installed CR2 battery (included). To activate the display backlight, locate the bottom switch on the lamp base and turn it to the 'on' position. Then, press and hold the 'ON/OFF' button on the lamp's control panel for 3 seconds.

Image: Visual guide for activating the LCD display, showing the bottom power switch and the long-press action on the main power button.
Operating Instructions
1. Adjusting Main Light
- Power On/Off: Lightly touch the main power button (often indicated by a sun icon) on the lamp's control panel to turn the main LED light on or off.
- Brightness Levels: With the main light on, tap the power button repeatedly to cycle through 3 different brightness levels (low, medium, high).
- Flexible Arm: The lamp arm is flexible, allowing you to adjust the light angle and direction as needed.

Image: Illustration of the three brightness levels of the main LED lamp, demonstrating the dimmable feature.
2. Color Changing Nightlight
- Activate Nightlight: Locate the color wheel touch sensor on the lamp's control panel. Touch the center of the color wheel to turn the nightlight on or off.
- Change Colors: Once the nightlight is on, slide your finger around the color wheel to select your desired color. The nightlight will change to match the color you touch.

Image: The desk lamp's base with the color wheel control, illustrating how to select different colors for the nightlight.
3. Setting Clock and Display
- Access Settings: Use the control buttons located on the underside of the lamp base to adjust the time, date, and alarm.
- Set Time/Date/Alarm: Follow the instructions in the included user manual for specific steps on setting each display parameter. The display shows hour, minute, month, date, day, temperature, and alarm status.
- Temperature Display: The lamp automatically displays the ambient temperature.

Image: Close-up of the digital display, detailing indicators for temperature, alarm mode, hour, minute, month, date, and day.
4. USB Charging
- Connect Device: Plug your device's USB charging cable into the USB OUTPUT 5V/1A port located on the back of the lamp base.
- Charging Indication: Your device should begin charging automatically.

Image: A smartphone connected to the USB charging port on the back of the desk lamp, illustrating the charging function.
5. Pen Holder
- Organize Stationery: Use the integrated pen holder compartment on the lamp base to store pens, pencils, markers, and other small office or study supplies.

Image: The desk lamp's pen holder filled with various colored pencils, demonstrating its organizational utility.
Maintenance
- Cleaning: Disconnect the power before cleaning. Use a soft, dry cloth to wipe the lamp. Do not use abrasive cleaners or solvents.
- Battery Replacement (Clock): If the clock display fails or becomes dim, the internal CR2 battery may need replacement. Refer to the troubleshooting section or the detailed manual for specific battery replacement steps.
- Storage: When not in use for extended periods, store the lamp in a cool, dry place.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Main LED light does not turn on. | No power supply or loose connection. | Ensure the power cable is securely connected to both the lamp and the power outlet. Check if the outlet is functional. |
| Clock display is blank or incorrect. | Clock battery depleted or not activated. | Ensure the bottom switch is 'on'. Long-press the main power button for 3 seconds to activate the display backlight. If still blank, the CR2 battery may need replacement. |
| Nightlight does not change colors. | Incorrect operation of the color wheel. | Ensure the nightlight is on by touching the center of the color wheel. Slide your finger around the wheel to select colors. |
| USB charging is not working. | Device not compatible or cable issue. | Check if the USB cable is properly connected to both the lamp and your device. Ensure your device supports 5V/1A charging. |

Image: Step-by-step guide for replacing the CR2 battery, showing how to access the battery compartment on the lamp's underside.
Product Specifications
| Feature | Specification |
|---|---|
| Brand | wanjiaone |
| Model Number | T188 |
| Product Dimensions | 5.31"D x 5.12"W x 23.62"H (13.5 cm D x 13 cm W x 60 cm H) |
| Item Weight | 2.16 Pounds (0.98 Kilograms) |
| Material | Plastic |
| Light Source Type | LED |
| Wattage | 10.3 watts |
| Voltage | 5 Volts |
| Control Method | Touch |
| Special Features | Color Changing, Dimmable |
| Included Components | LED Desk Lamp, Power Cable, Power Head, User Manual |
| Batteries | 1 CR2 battery required (included for clock function) |
Official Product Video
Video: An official product video from wanjiaone demonstrating the various functions of the desk lamp, including its adjustable light, color-changing nightlight, pen holder, and digital display.
Warranty and Support
For warranty information, technical support, or any inquiries regarding your wanjiaone LED Desk Lamp, please refer to the contact details provided in the original product packaging or visit the official wanjiaone website. Keep your purchase receipt for warranty claims.