Glocusent A28

Glocusent A28 Rechargeable Book Light User Manual

Model: A28 | UPC: 850064765274

1. Introduction

This manual provides detailed instructions for the safe and effective use of your Glocusent A28 Rechargeable Book Light. Please read this manual thoroughly before operating the device and retain it for future reference.

2. Product Overview

The Glocusent A28 is a compact, rechargeable book light designed for comfortable reading. It features adjustable brightness, multiple color temperatures, a sleep aid timer, and a travel lock function.

2.1 Components

  • Light Head: Contains 14 LED beads and a reflector for uniform illumination.
  • Control Panel: Includes Power, Brightness, Color Temperature, and Timer buttons.
  • Clip: Securely attaches the light to books or other surfaces.
  • USB-C Charging Port: For recharging the internal battery.
  • Travel Lock Switch: Prevents accidental activation.
Glocusent A28 Book Light with control panel and clip
Figure 1: Glocusent A28 Book Light showing the device and its controls, both detached and clipped onto a book.
Diagram of Glocusent A28 Book Light controls
Figure 2: Detailed view of the control panel, indicating the functions of each button: Power, Brightness Adjustment, Color Temperature Adjustment, and Timing Setting & Sleep Aid. Also shows the Safe Travel Lock and Type-C Rechargeable port.

3. Setup

3.1 Unboxing

Upon opening the package, ensure all components are present:

  • Glocusent A28 Bookmark Style Book Light
  • USB-C Charging Cable
  • User Manual
  • Bookmark

3.2 Initial Charge and Unlocking

The product is shipped in a locked state. Before first use or charging, you must unlock it.

  1. Locate the travel lock switch on the side of the device.
  2. Slide the switch to the 'unlocked' position.
  3. Connect the provided USB-C charging cable to the charging port on the device and to a standard USB power source (e.g., computer, wall adapter).
  4. The power indicators will illuminate during charging. A full charge typically takes a few hours.
Glocusent A28 Book Light showing USB-C charging port and battery life
Figure 3: The Glocusent A28 Book Light connected to a USB-C charging cable, illustrating the charging process and the device's long battery life (up to 90 hours).

4. Operating Instructions

4.1 Power On/Off

  • Press the Power Button (marked with a circle and vertical line) once to turn the light on.
  • Press the Power Button again to turn the light off.

4.2 Brightness Adjustment

The light offers 5 brightness levels.

  • With the light on, press the Brightness Adjustment Button (marked with three horizontal lines) repeatedly to cycle through the 5 brightness levels.

4.3 Color Temperature Adjustment

Choose from 3 color temperatures: 2700K (Warm), 4000K (Natural), and 6000K (Cool).

  • With the light on, press the Color Temperature Adjustment Button (marked with a light bulb icon) repeatedly to cycle through the three color modes.
Glocusent A28 Book Light showing 3 color temperatures and 5 brightness levels
Figure 4: Illustration of the 3 color temperatures (2700K, 4000K, 6000K) and 5 brightness levels, demonstrating their suitability for different reading environments and preferences.

4.4 Sleep Aid & Timer Function

The device includes 30-minute and 45-minute timers with a gradual dimming sleep aid mode.

  1. Set Reading Time: Short press the Timer Button (marked with a clock icon) to select either a 30-minute or 45-minute timer. An indicator light will confirm your selection.
  2. Activate Gradual Dimming: Long press the Timer Button to activate the gradual dimming feature. The light will slowly fade out over the selected timer duration, simulating a sunset to aid sleep.
Glocusent A28 Book Light with sleep aid and timer feature
Figure 5: The Glocusent A28 Book Light positioned on a bed next to a sleeping person, highlighting the sleep aid and timer functions for a gentle wind-down experience.
Instructions for activating gradual dimming sleep aid
Figure 6: Step-by-step guide on how to use the timer and gradual dimming feature to fall asleep, showing the short press for timer selection and long press for gradual dimming activation.

4.5 Travel Lock

To prevent accidental activation and conserve battery during transport:

  • Slide the travel lock switch to the 'locked' position. The device will not respond to button presses.
  • To use the light, slide the switch back to the 'unlocked' position.
Glocusent A28 Book Light showing travel lock and adjustable head
Figure 7: The Glocusent A28 Book Light demonstrating its compact size, travel lock feature, and flexible head for angle adjustments.

4.6 Adjusting the Light Head

The light head is designed for flexibility to direct illumination precisely where needed.

  • The light head can be rotated 150 degrees and tilted 65 degrees downward.
  • It can also swivel 90 degrees clockwise and 90 degrees anticlockwise.
  • Gently adjust the light head to achieve optimal illumination on your reading material without disturbing others.
Glocusent A28 Book Light showing rotatable light head
Figure 8: A person reading in bed with the Glocusent A28 Book Light, illustrating how the rotatable light head can be adjusted to illuminate only the book, preventing disturbance to a sleeping partner.

4.7 Clipping to Books

The precision-crafted clip ensures a secure grip without damaging pages.

  • Gently slide the clip onto the cover or pages of your book.
  • Ensure the clip is firmly attached to prevent the light from shifting during use.

5. Maintenance

5.1 Charging

To maintain optimal battery performance:

  • Charge the device when the power indicators show low battery.
  • Use the provided USB-C cable for charging.
  • Avoid overcharging by disconnecting the device once fully charged.

5.2 Cleaning

To clean your book light:

  • Ensure the device is turned off and disconnected from any power source.
  • Wipe the exterior with a soft, dry, or slightly damp cloth.
  • Do not use abrasive cleaners or immerse the device in water.

5.3 Storage

When not in use for extended periods:

  • Store the book light in a cool, dry place.
  • Engage the travel lock to prevent accidental power drain.
  • Charge the device at least once every three months to preserve battery health.

6. Troubleshooting

If you encounter issues with your Glocusent A28 Book Light, refer to the following common solutions:

ProblemPossible CauseSolution
Light does not turn on.Battery is depleted.
Travel lock is engaged.
Charge the device.
Disengage the travel lock.
Light does not charge.Cable or power source issue.
Travel lock is engaged.
Try a different USB-C cable or power adapter.
Ensure the travel lock is disengaged before charging.
Light flickers or dims unexpectedly.Low battery.Recharge the device fully.
Buttons are unresponsive.Travel lock is engaged.Disengage the travel lock.

If the problem persists after attempting these solutions, please contact Glocusent Customer Service.

7. Specifications

FeatureDetail
Model NumberA28 (GLCSNTN1202)
Dimensions4.2"D x 8.5"W x 3.1"H (approx. 11.43 x 3.3 x 1.52 cm)
Item Weight1.66 ounces (approx. 47 grams)
Light Source14 LED beads
Color Temperatures2700K, 4000K, 6000K
Brightness Levels5 levels (5 to 25 lumens)
Power SourceBattery Powered (Lithium Polymer, 1 A battery included)
Charging PortUSB-C
Voltage5 Volts (DC)
MaterialAcrylonitrile Butadiene Styrene
CertificationsFCC, CE, RoHS, PSE & C-TICK certified

8. Warranty and Support

8.1 Warranty Information

Your Glocusent A28 Book Light is covered by a 24-month warranty from the date of purchase. This warranty covers manufacturing defects and ensures the product meets its specified performance. Please retain your proof of purchase for warranty claims.

8.2 Return Service

A 30-day return service is available for your convenience.

8.3 Customer Support

For any questions, concerns, or support needs, please contact the Glocusent Customer Experience Team. They are available to assist you.

  • Online Support: Visit the official Glocusent website for FAQs and contact options.
  • Email Support: Refer to your product packaging or the official website for the customer service email address.

9. Safety Information

  • Do not disassemble, repair, or modify the device yourself. This may cause damage and void the warranty.
  • Keep the device away from water, fire, and high temperatures.
  • Do not expose the device to direct sunlight for prolonged periods.
  • Keep out of reach of children.
  • Dispose of the device and its battery according to local regulations.

© 2025 Glocusent. All rights reserved.

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